ChangeLog.txt

Version 3.5
-----------
- M?F: Fix for hours display in HBRTC application
- M?F: Fix for assembly error in DS1501RTC driver
- WBW: Add VT-100 graphics char selection to Propeller firmware
- WBW: Allow all lines of VGA display to be used on Propeller firmware
- WBW: Allow front panel LED/Switch bits to be inverted in config
- WBW: Add API to expose application banks available
- WBW: Added console takeover at boot loader prompt
- L?N: Fixed Propeller font vertical line character to align properly
- L?S: EF9345 video display controller driver
- WBW: Added Cowgol disk image based on the work of Ladislau Szilagyi
- WBW: Added support for CP/NET on Duodyne Disk I/O
- DDW: Added support for Duodyne Media board
- WBW: Auto restore TMS video on user reset (CP/M warm boot)
- L?B: Added support for NABU w/ RomWBW Option Board
- MAP: Reorganization of Doc directory introducing subfolders
- WBW: Upgraded BBCBASIC to v5.00
- W?S: Updated FLASH utility to v1.3.9
- WBW: Support RCBus PS/2 Keyboard (EP/Sally)
- M?R: Update Timer app to display output in decimal
- WBW: Preliminary support for S100 FPGA Z80 platform
- WBW: Added simple serial (SSER) driver
- WBW: Added preliminary support for S100 FPGA Z80 SD Cards
- M?R: Consolidated ROM Applications document into the Applications document
- M?R: Reviewed and substantially improved the Applications document
- WBW: Added support for DS1305 RTC on S100 FPGA Z80
- WBW: Added support for Les Bird's RCBus Graphics/Sound/Joystick module
- WBW: Added support for Les Bird's Dual 16C550 UART module
- WBW: Refactor UART driver for more flexible configuration
- M?R: Added hour/minute/second display to timer app
- WBW: Substantial customization of NZ-COM disk image
- WBW: Refactor build post-processing (ZRC, ZZRCC, etc.)
- MAP: Improved section Real Time Clock in User Guide document
- WBW: Support for Hitachi HD44780-based LCD display
- DRJ: Added support for Genesis STD Bus Z180 platform
- MAP: Improved section Disk Management in User Guide document
- WBW: Add CPU speed selection for HEATH platform to HBIOS
- WBW: Add Warm/Cold reboot options to CPUSPD utility
- D?N: Added support for eZ80 CPU
- MAP: Contributed COPYSL utility that allows disk slices to be copied
- MAP: Added new HBIOS function EXT_SLICE, extended disk slice info
- MAP: ROMLDR now uses EXT_SLICE to get Slice Sector for boot
- MAP: CBIOS now uses EXT_SLICE during drive selection
- MAP: CPM3 Boot Loader, and BIOS (drive select) now use EXT_SLICE
- M?R: Added REBOOT application
- MAP: Significant improvement in Disk Catalog document
- MAP: Added Disk Image for the Z3PLUS (Z-System for CP/M-Plus) os.
- H?H: Fix XModem 12.3 WRERR to put CAN char in proper register to send.
- MAP: Added support for dynamic HBIOS config via (RTC) NVRAM
- MAP: Added boot application to allow config of NVRAM options
- MAP: Configuration of autoboot disk/app added to NVRAM config
- WBW: Autoboot is now handled in seperate prompt during RomWBW startup
- MAP: Added additional tools (Linker/Disasembler) to the Z80ASM Disk Image
- PMS: Support interrupt-driven PS2 Keyboard Interface
- D?M: Added NetBoot support for Duodyne
- WBW: Add options to TUNE/HBIOS to force detection of MSX and RC AY/YM standard PSG ports
- MAP: Added /B=OPTIONS for automated drive assignment to ASSIGN.COM

Version 3.4
-----------
NOTE: Changes require HBIOS/CBIOS/Apps sync, version bump to 3.4 to ensure integrity
- WBW: Device type number moved from upper nibble to full byte
- A?C: Support for EP ITX-Mini Z180 Platform
- M?R: Significant improvement in User Guide document
- J?P: Preliminary support for Monsputer (MON)
- JLC: Standardize TMS driver memory map for compatibility
- WBW: Improved IDE device detection
- WBW: Fixed decompression when run on Z280
- K?B: WDATE generic HBIOS date/time utility
- WBW: Create new DSKY framework with simple driver style interface
- JBL: Added ColecoVision config in TMS driver
- WBW: Added support for interrupt mode 1 on Z180
- WBW: Added S100 platform
- WBW: Added Duodyne platform
- WBW: Incorporated John Monahan's S100 Monitor in S100 platform build
- WBW: Support ESP32 on Duodyne
- M?C: Fixed port specification when using XM.COM send transfers
- PMS: Support for Duodyne DMA
- WBW: Added Serial ROM (SROM.COM) utility
- WBW: Support S100 Propeller Console
- SCC: Added support for SC700
- WBW: Added Heath H8 platform
- D?J: Enhanced build to run on Raspberry Pi 4
- WBW: Complete overhaul of ROMless boot operation
- WBW: Prevent access to slices outside of partition
- T?P: Contributed the HTALK utility
- WBW: CTS stall detection
- W?S: Updated FLASH utility to v1.3.7
- L?N: Updated UNARC to new OS universal version
- B?C: Added support for Z1RCC
- M?R: User Guide enhancements and corrections
- D?H: Added support for specification of secondary console
- WBW: Added platform for Monsputer
- WBW: Added FAT.COM to standard ROM Disk (removed RMAC.COM & LINK.COM)

Version 3.3
-----------
NOTE: v3.3 was never released
- WBW: Support Front Panel switches
- A?C: Preliminary support for Z80-Retro
- A?C: Support for SD PIO
- A?C: Support for Z80-Retro SD interface
- WBW: Support per-drive floppy configuration
- WBW: Support for Bill Shen's VGARC
- WBW: Support for MG014 Parallel Port module + printer
- WBW: Support for IMM Zip Drive on PPI interface (much inspiration from Alan Cox)
- WBW: Support for PPA Zip Drive on PPI interface (much inspiration from Alan Cox)
- WBW: Support for SyQuest SparQ Drive on PPI interface (much inspiration from Alan Cox)
- WBW: Support for ATAPI Disk Drives (not CD-ROMs) on IDE and PPIDE interfaces
- R?P: Added new disk images: Aztec C, MS BASIC Compiler, MS Fortran, Games, HiTech-C, Turbo Pascal, SLR Z80ASM
- JBL: Added RCZ80 configuration for ColecoVision
- WBW: Support for Z180 running interrupt mode 1
- WBW: Preliminary support for S100 Computers Z180
- WBW: Preliminary support for Dan Werner's ESP32 MBC Module
- WBW: Early support for Duodyne base system (CPU/UART/ROM/RAM/RTC/SPK)
- M?C: Fixed XM to allow specifying HBIOS port for send operations
- WBW: Fix S100 Z180 LED operation (credit to Jay Cotton for finding this issue)
- WBW: QPM system image is now combined with current CBIOS during build
- WBW: Added framework for Heath platform
- WBW: Support for USB Disks via CH375/CH376
- D?J: Support for Raspberry Pi build process

Version 3.2.1
-------------
- M?P: Fixed Zeta 2 FDD and CPUSPD config settings
- WBW: Fixed SURVEY.COM (again)
- DDW: Updates to DOS/65 binaries in disk images
- PMS: Updates to VGMPLAY including support for YM2151
- WBW: Fix for quark delay adjustment being trashed

Version 3.2
-----------
- WBW: Version bump for release

Version 3.1.1
-------------
- WBW: Version bumped due to pervasive changes
- WBW: Preliminary hard disk partition support (backward compatible)
- WBW: Change Propeller VGA signal timings to 60Hz refresh
- WBW: Enhanced SYSTEM RESET function to allow a warm start back to boot loader
- C?O: Add DUART driver
- WBW: Early Z280 support (requires 512K RAM/ROM board)
- HCS: ZRC memory manager support
- S?K: Support for Tiny Z80 by Sergey
- E?B: Support for v6 YM/AY sound card
- C?M: Support for RCBus bus PropIO V2
- W?S: Updated FLASH software to v1.3.4
- PMS: Preliminary support for writing to FLASH ROMs
- PMS: Creation of process to update ROM system area w/o updating ROM disk contents
- PMS: Added "updater.asm" which allows uploading and updating ROM in one step
- WBW: Support for Z280 w/ native memory and interrupt mode 3
- WBW: Support for Z280 UART (interrupt driven only in interrupt mode 3)
- WBW: Add support Z80-512K (watchdog and LED)
- WBW: Add support for ZZ80MB address map
- PLS: Add support for Z180 invalid opcode trap
- WBW: Add support for ZZRCC
- WBW: Allow selection of RAM/ROM disk individually in build
- WBW: Support 256KB ROM size
- WBW: CP/M 3 RTC support is now complete (reads and writes RTC date/time)
- WBW: Add config to allow swapping logical order of MT011 SPI ports
- WBW: COPY.COM updated from v1.72 -> v1.73 throughout distribution
- D?M: CP/NET for CP/M 2.2 and CP/M 3 (requires MT011)
- D?M: SD driver fixes for MT011
- J?C: Added FIND application from Jay Cotton
- PMS: Preliminary support for I2C-based DS1307 clock
- WBW: FD driver auto hardware detect (thanks Alan Cox)
- D?N: Added support for TMS V9958 VDU
- D?N: Added support for MSX keyboard
- D?N: Added support for RP5C01 RTC
- L?N: Slightly enhanced ZCPRD&J w/ a couple bug fixes
- L?N: UNZIPZ4 which handles most modern ZIP file compression algorithms
- AJL: Preliminary support for MBC systems
- WBW: Added preliminary support for DSKYng
- WBW: Elevated MBC to a platform
- WBW: Added support for MBC user LEDs
- PMS: Early DMA support
- W?S: Updated FLASH software to v1.3.5 (supports 128KB A29010B, 512KB A29040B)
- DDW: Support for DSKYng capabitlities
- WBW: Added Phil Summers' ROM Updater into ROM Loader
- AJL: Added ramtest app (requires SBC and MBC for now)
- L?N: Provided SCOPY, XSUB01, and EX applications
- WBW: Added support for MBC FDC to FDU application
- WBW: Added support for MBC FDC to HBIOS
- WBW: Refactored make process
- WBW: Added ROM verification to boot process
- WBW: Added Z80 instruction test apps to user area 5 in CP/M & ZSDOS
- WBW: Add support for LINC sound card
- WBW: Add interrupt receive support to UART driver
- PMS: Add XModem transfer within Debug Monitor
- PMS & AJL: Add DMAMON test application
- PMS: Add ZMP adaptation
- LWN: Substantial BPBIOS cleanup
- AJL: Add ZMD adaptation
- D?T: Substantial update to TastyBasic incuding a .COM executable
- PMS: Added VGM audio file player
- WBW: ZPMLDR and ZPM3 fixes, credit to Lars Nelson for finding ZPM3 source!
- DDW: Add support for MBC sound card
- WBW: Add support for "romless" booting
- L?N: Fixes for ZCPR-D&J (buffer overflow, default drive/user)
- J?P: Add support for DS1501 RTC
- LLS: Added a user defined mode for SD Card interfaces (not complete)
- L?N: Updated ZDE to v1.8 including time stamp preservation fixes
- D?M: Minor update to CP/NET client files, fix to CPNBOOT
- WBW: Added p-System IV.0 Z80 implementation
- WBW: Hacked SURVEY to work around bank switching crash

Version 3.1
-----------
- WBW: Refactored ROM Loader
- WBW: INTRTC periodic timer based clock
- WBW: FDISK80 updated to allow reserving up to 256 slices
- WBW: Added support dual 16C550 UART on RCBus platform
- WBW: Made .com images smaller (contain only Z-System now)
- WBW: Support automatic clock hardware detection and fallback
- WBW: Support use of CTC for SIO baud rate divisors
- WBW: Updated IDE and PPIDE drivers to improve old CF Card compatibility
- WBW: Support TIMER mode in CTC driver
- DEN: Added sound driver support
- DEN: Added SN76489 sound chip driver
- M?O: RomWBW Disk Catalog document
- DEN: Updated TMS to optionally trigger SYSTIMER interrupt (TMSTIMENABLE)
- J?M: Updated KERMIT applications with VT100 terminal support
- A?C: Added support for EPFDC
- PMS: Added AY driver with new sound API support
- DEN: Allow immediate autoboot startup
- DEN: Support for floppy device count parameter

Version 3.0.1
-------------
- WBW: Increase XModem timeout waiting for host to start sending
- WBW: Update TMS driver to dynamically increase Z180 I/O W/S inside driver
- MJS: Update CLRDIR for CP/M 3 compatibility
- WBW: Corrected cursor on/off esc sequence in pre-configured ZDE
- WBW: Fix automatic CRT console switching under CP/M 3 and ZPM3
- WBW: DSRTC driver now correctly returns an error if there is no RTC present

Version 3.0.0
-------------
- WBW: v2.9.2 -> 3.0 version upgrade due to scope of changes

Version 2.9.2
-------------
- PMS: Fixed DS1210-related issue resulting in "Invalid BIOS" errors
- SCC: Support for SC126 motherboard
- WBW: Enable Auto-CTS/DCD in SIO driver for pacing output data
- WBW: Support missing pull-up resistors on SPI SD adapter boards (common)
- WBW: Support two SIO modules w/ auto-detection
- PMS: Support ECB USB-FIFO board
- WBW: Fixed ASSIGN issue with incorrect DPB selection
- WBW: Add RCBus Z180 AY sound support to TUNE app
- WBW: Add RCBus AY sound support to AY driver
- WBW: Add SC126 platform
- WBW: Config files cleanup
- WBW: Add interrupt support to ASCI driver
- WBW: Refactored XModem overlay, merged USB-FIFO support
- PMS: Added DS1210 low battery detection/message
- PMS: Added note playing ability to SPK driver
- WBW: Support disk I/O to any memory bank
- WBW: Fix floppy I/O error on slow CPUs w/ ints active (credit Jorge Rodrigues)
- WBW: Support for KIO chip (based on board by Tom Szolyga)
- N?B: Made ZCAL Y2K compliant
- WBW: Show disk activity on diagnostic LEDs
- WBW: DSRTC now detects DS-1302 presence dynamically
- WBW: SC126 platform renamed to SCZ180 w/ configs for SC126, SC130
- WBW: Add status LED support
- WBW: Add support for secondry SPI (SD Card) on SC126
- PMS: Add sound support to NASCOM BASIC
- WBW: Updated FAT to add MD and FORMAT commands
- WBW: Add CP/M 3 (experimental)
- M?T: Support Shift register SPI WIZNET for RCBus
- PLS: Added seconds register in HBIOS
- WBW: More flexible table-driven config in TUNE.COM
- PMS: Added timer support for Zilog Peripherals ECB Board
- PLS: Enhanced Intel Hex Load in dbgmon
- WBW: Overhaul disk image creation
- WBW: Added support for Dyno platform (based on work by Steve Garcia)
- SLG: Added support for BQ4845 RTC (bqrtc.asm)
- PMS: Added 80x30 video mode to VGA3 driver
- PMS: Added 80x43 video mode
- PMS: Added font compression option
- PMS: Added a "safe mode" startup w/ minimal device support
- WBW: Switch RC/SC Z180 platforms to 115,200 default baud rate
- PMS: Enhanced PPIDE driver to handle multiple PPI interfaces
- PMS: Added a ROM based game
- WBW: Only assign drive letters to hard disk devices with media
- WBW: Enhanced IDE driver to handle multiple IDE interfaces
- D?R: Contributed SC126 How-To: Preparing a MicroSD Card to Transfer Files to/from a Linux System
- PMS: Updated romldr to handle more than 9 drives
- PMS: Added "user" rom module template
- PMS: Added CP/M 3 manuals
- WBW: Boot from any slice
- C?M: Added Unix build process
- PLS: FreeRTOS compatibility
- WWB: Removed OSLDR application (can't handle new OSes)

Version 2.9.1
-------------
- E?B: Added support for RCBus RTC
- WBW: Converted PTXPLAY to TUNE (now plays PT2/PT3/MYM sounds files)
- WBW: Updated Win32DiskImager to v1.0
- WBW: Implemented character attributes on Propeller based consoles
- MS:  Added support for BEL function in Propeller based consoles
- WBW: Support additional escape sequences in Propeller console ANSI emulation
- WBW: Map LPT: to second serial port, UL1: to third serial port
- WBW: Update default IOBYTE so that LST:=LPT: by default
- WBW: Fixed missing drive/head setup for writes in PPIDE
- WBW: Fixed XModem HBIOS console driver for file send operations
- WBW: Preliminary support for RC180 platform (Z180 module in RCBus)
- WBW: Added NZCOM distribution files to third slice of hard disk image
- WBW: Fixed getnum32 bug in MODE command (found by Phil Summers)
- PMS: Added serial support for Zilog Peripherals Baord
- WBW: Added preliminary support for interrupt management API
- PMS: Improved boot messages in RAM-Floppy driver
- PMS: Added charge setting display to RTC boot messages
- WBW: Add SmallZ80 support to FDU
- WBW: Refactored Debug Monitor w/ improved syntax parsing and help
- PMS: Added Forth, Nascom BASIC, and Tasty BASIC to ROM
- PMS: Refactored ROM Loader to support more ROM images, now table driven
- WBW: Refactored DSKY code
- S?K:  Initial support for Easy Z80
- PMS: Enhance VDU driver to support alternative screen dimensions
- WBW: DDT and DDTZ modified to use RST 30 instead of RST 38 to avoid conflicts with IM 1 interrupts
- WBW: Added timer interrupt support for CTC under Zeta 2 and Easy Z80
- WBW: Support LBA style access in floppy driver
- WBW: Added beta version of FAT filesystem utility (copy, dir, del, ren)
- SCC: Added support for native memory addressing on Z180-based RCBus
- PMS: Dynamically discover and display processor type at boot
- J?L: Added German keyboard support to PPK and KBD drivers

Version 2.9.0
-------------
- WBW: Implemented multi-sector I/O in all disk drivers
- WBW: Added support for RCBus SMB Floppy controller modules (SMC and WDC)
- WBW: New function dispatching for character/disk/video drivers
- WBW: Updated FDU app to support RCBus floppy controllers
- WBW: Added TIMER app to display system timer value
- WBW: Refactored interrupt management code
- WBW: Added PTXPLAY application and sample tunes

Version 2.8.6
-------------
- WBW: Added support for RCBus (SIO and ACIA drivers primarily)
- WBW: Automatically detect and run PROFILE.SUB on boot drive if it exists
- WBW: Fixed Dual SD Board detection
- WBW: Added console support to XModem (for RCBus primarily)
- E?B: Fixed IDE/PPIDE when used with non-CF drives
- WBW: Patched SUBMIT.COM so that it always puts temp file on A: for immediate execution
- WBW: Accommodate spin up time for true IDE hard disks (IDE or PPIDE)

Version 2.8.5
-------------
- WBW: Cleaned up support in TMS driver for SCG board

Version 2.8.4
-------------
- WBW: FD.COM renamed to FDU.COM and integrated with build
- WBW: FDU.COM enhanced to select FDC hardare at startup to
       eliminate multiple versions.

Version 2.8.3
-------------
- WBW: Added MODE command
- WBW: Removed obsolete 1200.COM, 9600.COM, and 38400.COM
- WBW: New XM.COM that automatically adapts to primary port of platform
- WBW: XM.COM now handles 38400 baud at 4MHz
- WBW: Removed obsolete XM versions: XM5.COM, XM-A0.COM, XM-A1.COM

Version 2.8.2
-------------
- WBW: Adjusted VGA3 register setup per John's recommendations

Version 2.8.1
-------------
- WBW: Fix FDISK80
- WBW: Upgrade to latest production UNA 2.1-45

Version 2.8.0
-------------
- WBW: Add support for VGA3 board

Version 2.7.1
-------------
- WBW: Replace ZX with XP compatible build (no functional changes)
- WBW: Reset BDOS serial number on warm start
- WBW: Turn off DRAM refresh on Z180 (fixes Z180 CPU speed detection)

Version 2.7.0
-------------
- WBW: Memory page reorganization
- WBW: Support for Zeta 2 (from Sergey Kiselev)
- WBW: Support loading from image file (UNA FSFAT)
- WBW: Dynamic CPU speed detection

Version 2.6.5
-------------
- WBW: Yet more DS1302 clock driver delay mods

Version 2.6.4
-------------
- WBW: Yet more DS1302 clock driver delay mods

Version 2.6.3
-------------
- WBW: DS1302 clock driver modified to observe proper delays

Version 2.6.2
-------------
- WBW: ASSIGN.COM substantially improved to map all drive types

Version 2.6.1
-------------
- WBW: Both CP/M and ZSystem are imbedded in the ROM
       image.

Version 2.6
-----------
- WBW: Old Apps removed (MULTIFMT, CPMNAME, SETLABEL, etc.)
       removed because they are no longer working/supported
- WBW: Added SysCopy and SysGen to install OS on disks
- WBW: Added ASSIGN to modify disk drive mappings
- WBW: Added UNA UBIOS support
- WBW: Refactored CP/M disk mapping in CBIOS
- WBW: Switched to ZCPR-D&J for ZSystem build
- WBW: New bank/memory management routines in HBIOS including interbank copy
- WBW: Moved physical disk buffer into HBIOS bank
- WBW: Dynamic allocation of disk buffers in CBIOS

Version 2.5.5
-------------
- WBW: Updated VDU/CVDU configs to allow booting into CRT mode

Version 2.5.4
-------------
- WBW: Fixed IOBYTE handling
- WBW: Added Propeller firmware support for PropIO V2

Version 2.5.3
-------------
- WBW: Fixed EXM in DPB for 360K floppy definition (credit to Martin for finding this error)
- WBW: Improved /WAIT trigger performance in PropIO (credit to Marko)
       PropIO now seems to be compatible with CPU clock speeds up to ???
- WBW: Corrected the IO base address for PPIDE driver on N8 variants (credit to Arlen Michaels)

Version 2.5.2
-------------
- WBW: Added initial support for RAM Floppy

Version 2.5.1
-------------
- WBW: Fix PPIDE bug

Version 2.5
-----------
- WBW: Implemented CRT driver model (video and keyboard)
- WBW: Implemented ANSI terminal emulation
- WBW: Updated build process to remove CPU specification
- WBW: Refactored VDU and Color VDU drivers for new cRT driver model
- WBW: Refactored keyboard drivers for new CRT driver model
- WBW: Refactored PPIDE driver to improve performance
- WBW: Implemented "boot" messaging
- WBW: Fixed debug monitor (I, O, and H commands corrected)
- WBW: Added support for SCSI2IDE (SD Card driver primarily)
- WBW: Revised System Architecture document
- WBW: Added support for Dual SD board (preliminary)
- WBW: Overhaul of SD driver (sd.asm) to clean up the conditionals
- WBW: Completed Douglas' N8 video driver support
- WBW: ASCI driver has been separated from UART driver
- WBW: Added ZX CPM emulator and integrated with build process
- WBW: Updated Apps built with Aztec C to use the TINY library
- WBW: Updated CPMNAME application to reflect latest config data block
- WBW: Support multiple UART devices (up to 2 for now)
- WBW: Partial support for Multifunction / PIC (UART & PPIDE)
- WBW: Add chip detection to UART driver
- WBW: Move ram/rom disk code into separate driver (md.asm)

Version 2.1.1
-------------
- WBW: Corrected setup of Z180 wait states
- WBW: Added hd0-3 geometries to diskdefs file for cpmtools

Version 2.1
-----------
- WBW: Implemented write caching in (de)blocking algorithm
- WBW: Added Architecture documentation
- WBW: Config jumper controls default vs. alternate console for N8VEM/Zeta
- DGG: Added support for PPISD in SD Card driver
- WBW: Implemented screen saver in PropIO and ParPortProp (5 minute timeout)

Version 2.0
-----------
- WBW: Implemented Banked BIOS (drivers in separate bank)
- DGG: Updated in-situ flash utility for greater chip compatibility
- WBW: Updated FDTST to latest version (improved support for 5.25" and 8" media)
- WBW: Added ParPortProp driver
- DWG: Entire new suite of Apps written in Aztec C
- DWG:   BANKER.COM - displays bank identification and version information
- DWG:   CPMNAME.COM - displays CBIOS header data and SYSCFG data, names and vaues
- DWG:   CHARS.COM - displays ascii map as reference
- DWG:   CLS.COM - clears screen
- DWG:   LABEL.COM - displays and changes drive labels for drives with reserved tracks
- DWG:   MAP.COM - like old map command, displays drives and logical unit labels and changes LU values
- DWG:   META.COM - like old metaview command displays and edits drive metadata
- DWG:   REM.COM - used in submit files
- DWG:   SYSGEN.COM - replaces old writesys command, much nicer, more flexible
- DWG:   TERMTYPE.COM - like old termtype, displays and changes terminal type
- DWG:   VIEW.COM - displays drive DPH and DPB, with addresses, 4-up
- WBW: Updated FDTST to v3.0 (support for sector interleave in format)
- DGG: Support for CSIO based SD access for N8
- DWG: Added DWG-APPS.MAN file to ROM describing command line syntax of new applications
- WBW: Prebuilt ROMs are now all 512KB -- works fine on a 1MB ROM
- WBW: Added driver for SIMH AltairZ80 hard disk (HDSK)
- WBW: Added support for SDHC/XC card to SD Card driver
- DWG: Extra Apps can be downloaded from Apps/apps-bins (limited to 100K in ROM)
- DWG: /XSource/Makefile is work in progress for Mac OS X build (experimental)
- WBW: Updated SIMH build for latest SIMH release v3.9

Version 1.5.2
-------------
- DGG: Added in-situ flash programming application
- WBW: Added support for 8" floppy drives
- WBW: Upgraded FDTST.COM to version 2.7a on ROM disks
- DWG: Minor fixes to METAVIEW, and MAP
- DGG: Fixes for makefile.linux

Version 1.5.1
-------------
- WBW: Added ZSDOS clock drivers (see Support\Clock)
- WBW: Overhaul of ZSystem ROM Disk (see Doc\ZSystem.txt)
- WBW: Update PropIO ANSI emulation for compatiblity with ASSIGN
- DWG: Added version tags to all applications, and IDENT program to
       check version of utilities.
- DWG: Added MULTIFMT program which prepares new media for use by
       initializing the metadata and clearing the directory sectors of
       all logical units on a specific drive (IDE,PPIDE,PRPSD,SD).
- DWG: Enhanced MAP program combines the functionality of DRIVES,
       SLICES, and MAP. DRIVES and SLICES have been removed.
- DWG: ANALYSE and HELLO programs removed from ROM due space concerns
- DWG: Additional macro librarties added supporting program identification
       (IDENTITY.LIB/ASM) and access to drive metadata (METADATA.LIB/ASM),
       and realtime selection of logical units from within new application
       programs (LOGICALS.LIB/ASM).
- DWG: Added TERM_VT52 for VDU compatbility, all apps now compliant
- DGG: Contributed Linux build (see Doc\BuildLinux.txt)

Version 1.5
-----------
- WBW: Upgraded XModem to version 12.5
- WBW: Added support for PropIO (RomWBW specific firmware required on PropIO)
- WBW: Corrected RTC application for N8 (it now works)
- WBW: Included updated FDTST v2.6 w/ support for 5.25" floppy drives
- WBW: Added OS support for 5.25" drives
- DWG: New Apps ACCESS, ANALYSE, FINDFILE,HELLO,METAVIEW,NOACCESS,RTC2012
- DWG: RMAC macro files re-written as hybrid libraries making executables smaller and faster
- DWG: Loader displays logical unit label with other stats
- DWG: CPMNAME enhanced to support new PROP I/O SD
- DWG: Much more inline doc in Apps source code
- DWG: Add ACCESS to verify file present in submit
- DWG: Add ANALYSE as sample program demonstrating macro usage
- DWG: Add FINDFILE to locate file(s) in any Logical Unit (slice)
- DWG: Add HELLO as clasic hello world sample
- DWG: Add METAVIEW to display and manage file system metadata
- DWG: Add NOACCESS to verify file not present in submit

Version 1.4
-----------
- DWG: Add various .SUB files used for application maintenance
- DWG: Enhanced utility building .SUB files to only contain libs utilitized
- DWG: Add BUILD.SUB to build all applications and DEVFILES.LBR
- DWG: Add/update RMAC macro libraries used in Apps -
- DWG:	 BIOSHDR, STDLIB, STRCPY, STRLEN, CPMBIOS, CPMBDOS, TERMINAL, HARDWARE,
- DWG:   CPMAPPL, GLOBALS, ATOI, LUBIND, APPLVERS, MEMORY(memcpy,memset), PORTAB
- DWG: Add/Repair BIOS support for Boot Drive login during CP/M Coldstart
- DWG: All Apps utilities now licensed with GNU Public License v3
- DWG: DRIVES utility now  dispays labels for drives with reserved track(s)
- DWG: DEVFILES.LBR now include just .ASM, .LIB, and .SUB files
- DWG: Updated CPMNAME for latest config changes, added paging
- DWG: Add REM utility for use in SUBMIT files
- DWG: Add STOP utility to terminate execution of SUBMIT files
- DWG: Add PAUSE utility to pause the execution of SUBMIT files
- DWG: Add REQ1PARM utility to verify a parameter was specified
- DWG: Add HEADER utility to display addresses of BIOS header data items
- DWG: Add command line MAP utility "map A: 23" for use general use and in SUBMIT files
- DWG: Retired PPIDELUx utilities in favor of new MAP utility
- DWG: Add SLICES utility to display labels of all slices on current drive 3/line, formatted
- DWG: Add LABEL utility to insert label into drive/slice metadata
- DWG: Add 16 char label field to metadata
- DWG: ASSIGN utility displays and manipulates DPH/DPB & logical unit parameters
- DWG/WBW: Collaborated on design of Logical Unit DPH enhancemnt
- WBW: Proposed MAP utility functionality
- WBW: Implement slice selection API for DSK devices
- WBW: Record boot drive in config memory at load time
- WBW: Add DSKY_KBD flag to util.asm so that keyboard routines can be built only when needed to save space in CBIOS
- WBW: Support 16550 UART FIFO (selectively via config, enabled where available)
- WBW: Remove B: default from xmodem (default to current drive)
- WBW: Consolidate xmodem code variations using conditionals
- WBW: Add xmodem variation for N8 ASCI1 (N8 now has XM0 & XM1 instead of XM)
- WBW: Remove CCP extension that searches USER 0 area for executables
- WBW: Reset drives when exitting FDTST (media format may have changed)
- WBW: Switch from VDE to ZDE
- WBW: Added signature to system image prefix
- WBW: Modified SD card disk layout for consistency with other media (existing sd cards need reformatting!)
- WBW: Upgraded ZSDOS from v1.1 to v1.2
- WBW: Modified build so that separate ('_z') config files are no longer needed


Version 1.3.3
-------------

- WBW: Changed startup banner for ZSystem builds
- WBW: Modified XM for ZSystem builds to default to current drive
- WBW: Included zsdos.lbr in Support directory

Version 1.3.2
-------------

- WBW: ZSDOS/ZDDOS support added
- WBW: ZCPR support added

Version 1.3.1
-------------

- WBW: Updated FDTST application to handle faster (20MHz) systems, slower is OK
- WBW: Small fix to SD card driver to handle card init failure in rare situations
- DWG: Updated WRITESYS to improve SELDSK BIOS call compatibility

Version 1.3
-----------

- DWG: WRITEIMG renamed to WRITESYS, works on PPIDE, CPM.SYS added to ROM
- DWG: TERMTYPE gets and sets terminal type
- DWG: PPIDELUX programs will dynamically select storage "slice" on device
- DWG: DRIVES utility will show current drive mappings
- DWG: CPMNAME utility enhanced to include all new config settings
- DWG: DEVFILES Douglas Goodall's Development Environment added to Apps
- DWG: Configured Wordstar and front end utility added to Apps
- DWG: Added drive mapping display to loader
- DWG: Added "Logical Unit" support for PPIDE (allows full use of media)
- DWG: Designed Application Package format and Protocol
- WBW: Implemented IOBYTE and character device driver interface abstraction layer.
- WBW: Mapped VDU to CRT: device (N8VEM SBC w/ VDU hardware only)
- WBW: Implemented second UART for N8 as UC1: device
- WBW: Implemented SD driver (N8 only)
- WBW: Implemented hot swap for SD driver (N8 only)
- WBW: Added DSKY display for SD driver (N8 only)
- WBW: Corrected keymap in VDU driver (N8VEM SBC w/ VDU hardware only)
- WBW: Removed filler and allocated space to rom extension area
- WBW: Added new standard build configurations for N8 (fd, sd, ppide)
- WBW: Implement DBGCON selection (UART or VDU)
- WBW: Implement LDRCON selection (UART of VDU)
- WBW: Made ROM size selection part of build command
- WBW: Made processor selection (Z80 vs. Z180) part of build command

Version 1.2
-----------

- DWG: Updated CPMNAME and WRITEIMG utilities
- WBW: Added N8 support (minimal, based on work by David Giles, but not as robust as N8RomDG).
- WBW: Added support for VDU board (code from Andrew Lynch, Dan Werner and James Moxham)
- WBW: Boot loader configurable for auto-selection w/ timeout (as requested by Bob Devries)

Older Stuff
-----------

This work is all derived from JC110508.  Note that JC110508 included
the fix for DPB in CBIOS for large ROM drive.  Specifically, EXM_5
was changed from 1 -> 0 (as it should have been).

1) Fixed the stack location in loader-b.asm.  LOADER.COM was not working
for me without this change.

2) Fixed the size of the ccp+bdos+cbios in bloader.asm and loader-b.asm.
It was too small before and would be a potential problem depending on
how many of the optional features were enabled.

3) Fixed the "MON" command in cpm.  It was jumping to an old/bad location.
I modified the way it works a bit to handle the situation where it can
become overlaid.  There is now a routine in cbios.asm to reload it and
branch to the warm start location.  The address of the cbios routine is
now saved in the cbios scratch area of zero page (40H) so that ccp does
not need to have a hard coded location in it.

4) Corrected ROM memory layout a bit.  Small ROM drive was starting at the
wrong location (4800H).  It should have been 5000H.  So, I gave the loader
2K more space.  Required modifications to bloader and cbios.  Renamed
'romdsk.dsk' to 'romdsk.dat' to help alert folks to the fact that this is
a different image and allows "clean" to remove anything with a suffix
of '.img'.

5) Changed bloader to allow selection of DSKY or UART monitor using JP2.
A single ROM can now be dynamically configured to start via DSKY or UART.

6) Fixed small ROM disk DPB in cbios.  Changed DSM_6 from 31 -> 11.  Based
on blocksize of 1024 and the fact that it is now a 12K area, 11 is the
correct value.  Also fixed EXM_6 from 1 -> 0 (per DRI spec).

7) Moved startup message from warm boot to cold boot.  Also moved VDU init
to cold boot -- seems appropriate, but I have no way to test this yet...

8) More DPB tweaks.  I have reviewed the floppy and RAM/ROM DPB's.  I have
not looked at ATAPI or IDE.  May still be problems in those.

9) Complete overhaul of build scripts.  Reworked makefile to be compatible
with the make utility from gcc and created MakeRom.cmd to invoke the gcc
make utility.  Created a PowerShell script as an alternative way to create
ROM (BuildRom.ps1) and created BuildRom.cmd to invoke it.  Final ROM
image is now called rom.img -- made more sense to me, but I have no
compelling justification for changing that.  BuildRom2.bat is still
there and I think it works.

10) Played with the startup message in cbios a bit.  Extracted the "build"
id and moved it to the top of the file.  My intent is to make it easy to
update.  Ultimately, I wold prefer that it be updated with the current
date of the build as part of the build scripts, but still debating how
best to accomplish that.

11) Related to #10, I have extracted the 3rd party build tools into sibling
directories.  So, for example, tasm is now found at tasm32.  This makes it
very easy to update the 3rd party tools and to clearly differentiate the
3rd party tool files.  All build script have been updated as needed.

12) Removed ALL enable interrupt (EI) instructions in CBIOS.  By leaving
interrupts disabled the BIOS will now start OK even if some vagrant
hardware is asserting an interrupt (DISKIO).  Seems like this is better
anyway -- general idea is that we only enable interupts precisely
when desired for very specific controled purposes since there is no
concept of interrupt dispatching available.