Register the 'default' segment in the symbol table (#60)

src/asm.ts

@@ -533,9 +533,10 @@ class Assembler {
         this.outOfRangeBranches = [];
         this.debugInfo = new DebugInfoTracker();
 
-        // Empty segments list and append default
+        // Empty segments list and register the 'default' segment
         this.segments = [];
         this.curSegment = this.newSegment('default', this.platform.defaultStartPC, undefined, true);
+        this.scopes.declareSegment('default', this.curSegment);
     }
 
     newSegment(name: string, startAddr: number, endAddr: number | undefined, inferStart: boolean): Segment {

test/cases/segment5.expected.asm

@@ -0,0 +1,16 @@
+0801: A9 00        LDA #$00
+0803: 20 10 08     JSR $0810
+0806: A9 01        LDA #$01
+0808: 20 10 08     JSR $0810
+080B: 00           BRK
+080C: 00           BRK
+080D: 00           BRK
+080E: 00           BRK
+080F: 00           BRK
+0810: 60           RTS
+0811: 00           BRK
+0812: 00           BRK
+0813: 00           BRK
+0814: 00           BRK
+0815: 01 02        ORA ($02,X)
+0817: 03

test/cases/segment5.input.asm

@@ -0,0 +1,18 @@
+
+!segment code(start=$810, end=$813)
+!segment data(start=$814, end=$817)
+
+* = $801
+    lda #0
+    jsr part_1
+
+!segment code
+part_1:
+    rts
+
+!segment data
+!byte 0,1,2,3
+
+!segment default
+    lda #1
+    jsr part_1