Relocate Z280 IVT

The Z280 Interrupt Vector Table must be gin on a 4K boundary. Recent HBIOS changes caused it's location to result in a very large slack space. This update moves the Z280 IVT to a more memory efficient location.
wwarthen · Sep 18, 2024 · ab9f0be · ab9f0be
1 parent d3489b6
commit ab9f0be
Showing 1 changed file with 100 additions and 100 deletions.
diff --git a/Source/HBIOS/hbios.asm b/Source/HBIOS/hbios.asm
@@ -78,8 +78,8 @@
 ; Interrupt Vector Table	0x0500	Varies
 ; System Initialization		Varies	Varies
 ; Function Dispatching		Varies	Varies
-; System API                    Varies	Varies
 ; Z280 Int Vector Table         Varies	Varies
+; System API                    Varies	Varies
 ; Internal Functions            Varies	Varies
 ; Utility Functions             Varies	Varies
 ; Print Summary Function        Varies	Varies
@@ -4808,6 +4808,104 @@ SYS_DISPATCH:
 HB_DISP_END	.EQU	$
 ;
 ;==================================================================================================
+;   Z280 INTERRUPT VECTOR TABLE
+;==================================================================================================
+;
+HB_Z280IVT_BEG	.EQU	$
+;
+; THE Z280 IVT MUST BE ON A 4K BOUNDARY.  IT HAS BEEN LOCATED
+; HERE IN AN EFFORT TO MINIMIZE WASTED SPACE.  THERE SHOULD BE
+; A LITTLE LESS THAN 4K OF CODE ABOVE.
+;
+#IF (MEMMGR == MM_Z280)
+;
+Z280_IVT_SLACK_ORG	.EQU	$
+	ALIGN($1000)
+Z280_IVT_SLACK		.EQU	$ - Z280_IVT_SLACK_ORG
+	.ECHO	"Z280 IVT SLACK = "
+	.ECHO	Z280_IVT_SLACK
+	.ECHO	" bytes.\n"
+;
+Z280_IVT:
+	.DW	0, 0			; RESERVED
+	.DW	0			; NMI MSR
+	.DW	0			; NMI VECTOR
+	.DW	$0000			; INT A MSR
+	.DW	Z280_BADINT		; INT A VECTOR
+	.DW	$0000			; INT B MSR
+	.DW	Z280_BADINT		; INT B VECTOR
+	.DW	$0000			; INT C MSR
+	.DW	Z280_BADINT		; INT C VECTOR
+	.DW	$0000			; COUNTER/TIMER 0 MSR
+	.DW	Z280_BADINT		; COUNTER/TIMER 0 VECTOR
+	.DW	$0000			; COUNTER/TIMER 1 MSR
+	.DW	Z280_BADINT		; COUNTER/TIMER 1 VECTOR
+	.DW	0, 0			; RESERVED
+	.DW	$0000			; COUNTER/TIMER 2 MSR
+	.DW	Z280_BADINT		; COUNTER/TIMER 2 VECTOR
+	.DW	$0000			; DMA CHANNEL 0 MSR
+	.DW	Z280_BADINT		; DMA CHANNEL 0 VECTOR
+	.DW	$0000			; DMA CHANNEL 1 MSR
+	.DW	Z280_BADINT		; DMA CHANNEL 1 VECTOR
+	.DW	$0000			; DMA CHANNEL 2 MSR
+	.DW	Z280_BADINT		; DMA CHANNEL 2 VECTOR
+	.DW	$0000			; DMA CHANNEL 3 MSR
+	.DW	Z280_BADINT		; DMA CHANNEL 3 VECTOR
+	.DW	$0000			; UART RECEIVER MSR
+	.DW	Z280_BADINT		; UART RECEIVER VECTOR
+	.DW	$0000			; UART TRANSMITTER MSR
+	.DW	Z280_BADINT		; UART TRANSMITTER VECTOR
+	.DW	$0000			; SINGLE STEP TRAP MSR
+	.DW	Z280_SSTEP		; SINGLE STEP TRAP VECTOR
+	.DW	$0000			; BREAK ON HALT TRAP MSR
+	.DW	Z280_BRKHLT		; BREAK ON HALT TRAP VECTOR
+	.DW	$0000			; DIVISION EXCEPTION TRAP MSR
+	.DW	Z280_DIVEXC		; DIVISION EXCEPTION TRAP VECTOR
+	.DW	$0000			; STACK OVERFLOW WARNING TRAP MSR
+	.DW	Z280_STKOVR		; STACK OVERFLOW WARNING TRAP VECTOR
+	.DW	$0000			; ACCESS VIOLATION TRAP MSR
+	.DW	Z280_ACCVIO		; ACCESS VIOLATION TRAP VECTOR
+	.DW	$0000			; SYSTEM CALL TRAP MSR
+	.DW	Z280_SYSCALL		; SYSTEM CALL TRAP VECTOR
+	.DW	$0000			; PRIVILEGED INSTRUCTION TRAP MSR
+	.DW	Z280_PRIVINST		; PRIVILEGED INSTRUCTION TRAP VECTOR
+	.DW	$0000			; EPU <- MEMORY EXTENDED INSTRUCTION TRAP MSR
+	.DW	$0000			; EPU <- MEMORY EXTENDED INSTRUCTION TRAP VECTOR
+	.DW	$0000			; MEMORY <- EPU EXTENDED INSTRUCTION TRAP MSR
+	.DW	$0000			; MEMORY <- EPU EXTENDED INSTRUCTION TRAP VECTOR
+	.DW	$0000			; A <- EPU EXTENDED INSTRUCTION TRAP MSR
+	.DW	$0000			; A <- EPU EXTENDED INSTRUCTION TRAP VECTOR
+	.DW	$0000			; EPU INTERNAL OPERATION EXTENDED INSTRUCTION TRAP MSR
+	.DW	$0000			; EPU INTERNAL OPERATION EXTENDED INSTRUCTION TRAP VECTOR
+	.DW	0, 0			; RESERVED
+	.DW	0, 0			; RESERVED
+	; PROGRAM COUNTER VALUES FOR NMI/INTA (16)
+	.DW	HBX_IV00
+	.DW	HBX_IV01
+	.DW	HBX_IV02
+	.DW	HBX_IV03
+	.DW	HBX_IV04
+	.DW	HBX_IV05
+	.DW	HBX_IV06
+	.DW	HBX_IV07
+	.DW	HBX_IV08
+	.DW	HBX_IV09
+	.DW	HBX_IV0A
+	.DW	HBX_IV0B
+	.DW	HBX_IV0C
+	.DW	HBX_IV0D
+	.DW	HBX_IV0E
+	.DW	HBX_IV0F
+;
+	; THE REMAINDER OF THE Z280 IVT IS TRUNCATED HERE BECAUSE IT
+	; TAKES A BUNCH OF SPACE AND IS NOT USED.  WE SUPPORT ONLY
+	; 16 VECTORED INTERRUPTS AND THEY MUST BE CONNECTED TO INTA.
+;
+#ENDIF
+;
+HB_Z280IVT_END	.EQU	$
+;
+;==================================================================================================
 ;   SYSTEM API FUNCTIONS
 ;==================================================================================================
 ;
@@ -6043,104 +6141,6 @@ SYS_INTSET1:
 HB_SYSAPI_END	.EQU	$
 ;
 ;==================================================================================================
-;   Z280 INTERRUPT VECTOR TABLE
-;==================================================================================================
-;
-HB_Z280IVT_BEG	.EQU	$
-;
-; THE Z280 IVT MUST BE ON A 4K BOUNDARY.  IT HAS BEEN LOCATED
-; HERE IN AN EFFORT TO MINIMIZE WASTED SPACE.  THERE SHOULD BE
-; A LITTLE LESS THAN 4K OF CODE ABOVE.
-;
-#IF (MEMMGR == MM_Z280)
-;
-Z280_IVT_SLACK_ORG	.EQU	$
-	ALIGN($1000)
-Z280_IVT_SLACK		.EQU	$ - Z280_IVT_SLACK_ORG
-	.ECHO	"Z280 IVT SLACK = "
-	.ECHO	Z280_IVT_SLACK
-	.ECHO	" bytes.\n"
-;
-Z280_IVT:
-	.DW	0, 0			; RESERVED
-	.DW	0			; NMI MSR
-	.DW	0			; NMI VECTOR
-	.DW	$0000			; INT A MSR
-	.DW	Z280_BADINT		; INT A VECTOR
-	.DW	$0000			; INT B MSR
-	.DW	Z280_BADINT		; INT B VECTOR
-	.DW	$0000			; INT C MSR
-	.DW	Z280_BADINT		; INT C VECTOR
-	.DW	$0000			; COUNTER/TIMER 0 MSR
-	.DW	Z280_BADINT		; COUNTER/TIMER 0 VECTOR
-	.DW	$0000			; COUNTER/TIMER 1 MSR
-	.DW	Z280_BADINT		; COUNTER/TIMER 1 VECTOR
-	.DW	0, 0			; RESERVED
-	.DW	$0000			; COUNTER/TIMER 2 MSR
-	.DW	Z280_BADINT		; COUNTER/TIMER 2 VECTOR
-	.DW	$0000			; DMA CHANNEL 0 MSR
-	.DW	Z280_BADINT		; DMA CHANNEL 0 VECTOR
-	.DW	$0000			; DMA CHANNEL 1 MSR
-	.DW	Z280_BADINT		; DMA CHANNEL 1 VECTOR
-	.DW	$0000			; DMA CHANNEL 2 MSR
-	.DW	Z280_BADINT		; DMA CHANNEL 2 VECTOR
-	.DW	$0000			; DMA CHANNEL 3 MSR
-	.DW	Z280_BADINT		; DMA CHANNEL 3 VECTOR
-	.DW	$0000			; UART RECEIVER MSR
-	.DW	Z280_BADINT		; UART RECEIVER VECTOR
-	.DW	$0000			; UART TRANSMITTER MSR
-	.DW	Z280_BADINT		; UART TRANSMITTER VECTOR
-	.DW	$0000			; SINGLE STEP TRAP MSR
-	.DW	Z280_SSTEP		; SINGLE STEP TRAP VECTOR
-	.DW	$0000			; BREAK ON HALT TRAP MSR
-	.DW	Z280_BRKHLT		; BREAK ON HALT TRAP VECTOR
-	.DW	$0000			; DIVISION EXCEPTION TRAP MSR
-	.DW	Z280_DIVEXC		; DIVISION EXCEPTION TRAP VECTOR
-	.DW	$0000			; STACK OVERFLOW WARNING TRAP MSR
-	.DW	Z280_STKOVR		; STACK OVERFLOW WARNING TRAP VECTOR
-	.DW	$0000			; ACCESS VIOLATION TRAP MSR
-	.DW	Z280_ACCVIO		; ACCESS VIOLATION TRAP VECTOR
-	.DW	$0000			; SYSTEM CALL TRAP MSR
-	.DW	Z280_SYSCALL		; SYSTEM CALL TRAP VECTOR
-	.DW	$0000			; PRIVILEGED INSTRUCTION TRAP MSR
-	.DW	Z280_PRIVINST		; PRIVILEGED INSTRUCTION TRAP VECTOR
-	.DW	$0000			; EPU <- MEMORY EXTENDED INSTRUCTION TRAP MSR
-	.DW	$0000			; EPU <- MEMORY EXTENDED INSTRUCTION TRAP VECTOR
-	.DW	$0000			; MEMORY <- EPU EXTENDED INSTRUCTION TRAP MSR
-	.DW	$0000			; MEMORY <- EPU EXTENDED INSTRUCTION TRAP VECTOR
-	.DW	$0000			; A <- EPU EXTENDED INSTRUCTION TRAP MSR
-	.DW	$0000			; A <- EPU EXTENDED INSTRUCTION TRAP VECTOR
-	.DW	$0000			; EPU INTERNAL OPERATION EXTENDED INSTRUCTION TRAP MSR
-	.DW	$0000			; EPU INTERNAL OPERATION EXTENDED INSTRUCTION TRAP VECTOR
-	.DW	0, 0			; RESERVED
-	.DW	0, 0			; RESERVED
-	; PROGRAM COUNTER VALUES FOR NMI/INTA (16)
-	.DW	HBX_IV00
-	.DW	HBX_IV01
-	.DW	HBX_IV02
-	.DW	HBX_IV03
-	.DW	HBX_IV04
-	.DW	HBX_IV05
-	.DW	HBX_IV06
-	.DW	HBX_IV07
-	.DW	HBX_IV08
-	.DW	HBX_IV09
-	.DW	HBX_IV0A
-	.DW	HBX_IV0B
-	.DW	HBX_IV0C
-	.DW	HBX_IV0D
-	.DW	HBX_IV0E
-	.DW	HBX_IV0F
-;
-	; THE REMAINDER OF THE Z280 IVT IS TRUNCATED HERE BECAUSE IT
-	; TAKES A BUNCH OF SPACE AND IS NOT USED.  WE SUPPORT ONLY
-	; 16 VECTORED INTERRUPTS AND THEY MUST BE CONNECTED TO INTA.
-;
-#ENDIF
-;
-HB_Z280IVT_END	.EQU	$
-;
-;==================================================================================================
 ;   GLOBAL INTERNAL HBIOS FUNCTIONS
 ;==================================================================================================
 ;
@@ -9158,8 +9158,8 @@ SLACK		.EQU	BNKTOP - $
 	.ECHO "INTVEC         \t" \ .ECHO HB_INTVEC_BEG \ .ECHO "\t" \ .ECHO HB_INTVEC_END - HB_INTVEC_BEG \ .ECHO "\n"
 	.ECHO "SYSINIT        \t" \ .ECHO HB_SYSINIT_BEG \ .ECHO "\t" \ .ECHO HB_SYSINIT_END - HB_SYSINIT_BEG \ .ECHO "\n"
 	.ECHO "DISP           \t" \ .ECHO HB_DISP_BEG \ .ECHO "\t" \ .ECHO HB_DISP_END - HB_DISP_BEG \ .ECHO "\n"
-	.ECHO "SYSAPI         \t" \ .ECHO HB_SYSAPI_BEG \ .ECHO "\t" \ .ECHO HB_SYSAPI_END - HB_SYSAPI_BEG \ .ECHO "\n"
 	.ECHO "Z280IVT        \t" \ .ECHO HB_Z280IVT_BEG \ .ECHO "\t" \ .ECHO HB_Z280IVT_END - HB_Z280IVT_BEG \ .ECHO "\n"
+	.ECHO "SYSAPI         \t" \ .ECHO HB_SYSAPI_BEG \ .ECHO "\t" \ .ECHO HB_SYSAPI_END - HB_SYSAPI_BEG \ .ECHO "\n"
 	.ECHO "INTFUNC        \t" \ .ECHO HB_INTFUNC_BEG \ .ECHO "\t" \ .ECHO HB_INTFUNC_END - HB_INTFUNC_BEG \ .ECHO "\n"
 	.ECHO "UTIL           \t" \ .ECHO HB_UTIL_BEG \ .ECHO "\t" \ .ECHO HB_UTIL_END - HB_UTIL_BEG \ .ECHO "\n"
 	.ECHO "PRTSUM         \t" \ .ECHO HB_PRTSUM_BEG \ .ECHO "\t" \ .ECHO HB_PRTSUM_END - HB_PRTSUM_BEG \ .ECHO "\n"