mirror of
https://github.com/cc65/cc65.git
synced 2024-06-17 00:29:31 +00:00
Drawing text
This commit is contained in:
Dave Plummer
parent
1c838e5db7
commit
4ceeb9c4ab
Binary file not shown.
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@ -20,6 +20,7 @@ extern void DrawCircle(void);
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extern void SetPixel(void);
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extern void ClearPixel(void);
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extern void DrawChar(void);
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extern void Demo(void);
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extern byte __fastcall__ AscToPet(byte in);
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extern byte __fastcall__ ReverseBits(byte in);
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extern unsigned char font8x8_basic[256][8];
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@ -28,6 +29,8 @@ extern int x1cord;
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extern int y1cord;
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extern int x2cord;
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extern int y2cord;
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extern int cursorX;
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extern int cursorY;
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// If in zeropage:
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//
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@ -42,9 +45,6 @@ byte * screen = (byte *) 0xA000;
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// Cursor position
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int CursorX = 0;
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int CursorY = 0;
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#define SCREEN_WIDTH 320
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#define SCREEN_HEIGHT 200
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#define CHARWIDTH 8
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@ -92,17 +92,17 @@ void DrawText(char * psz)
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{
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while (*psz)
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{
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while (CursorX >= CHARSPERROW)
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while (cursorX >= CHARSPERROW)
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{
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CursorX -= CHARSPERROW;
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CursorY += 1;
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cursorX -= CHARSPERROW;
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cursorY += 1;
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}
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// If we've gone off the bottom of the screen, we scroll the screen and back up to the last line again
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if (CursorY >= ROWSPERCOLUMN)
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if (cursorY >= ROWSPERCOLUMN)
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{
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CursorY = ROWSPERCOLUMN - 1;
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cursorY = ROWSPERCOLUMN - 1;
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ScrollScreen();
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}
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@ -110,19 +110,19 @@ void DrawText(char * psz)
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if (*psz == 0x0A)
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{
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CursorX = 0;
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CursorY++;
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cursorX = 0;
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cursorY++;
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psz++;
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}
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else
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{
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c = *psz;
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__asm__ ("ldx %v", CursorX);
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__asm__ ("ldy %v", CursorY);
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__asm__ ("ldx %v", cursorX);
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__asm__ ("ldy %v", cursorY);
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__asm__ ("lda %v", c);
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DrawChar();
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CursorX++;
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cursorX++;
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psz++;
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}
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}
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@ -130,8 +130,8 @@ void DrawText(char * psz)
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void DrawTextAt(int x, int y, char * psz)
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{
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CursorX = x;
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CursorY = y;
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cursorX = x;
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cursorY = y;
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DrawText(psz);
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}
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@ -218,11 +218,9 @@ int main (void)
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// Clear the screen memory
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ClearScreen();
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Demo();
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// Draw the welcome banner at the top of the screen
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DrawTextAt(0, 0, " *** COMMODORE KIM-1 SHELL v1.1 ***");
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DrawTextAt(0, 2, " 60K RAM SYSTEM. 49152 BYTES FREE.");
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DrawTextAt(0, 4, "READY.\n");
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//DrawTextAt(184, 192, "TEST");
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// DrawScreenMoire(0,30, 319, 199);
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@ -112,14 +112,15 @@ Current file: kimGFX.s
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000000r 1 .import _SetPixel
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000000r 1 .import _ClearPixel
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000000r 1 .import _DrawChar
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000000r 1 .import _Demo
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000000r 1 .import _ReverseBits
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000000r 1 .import _font8x8_basic
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000000r 1 .import _x1cord
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000000r 1 .import _y1cord
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000000r 1 .import _y2cord
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000000r 1 .import _cursorX
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000000r 1 .import _cursorY
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000000r 1 .export _screen
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000000r 1 .export _CursorX
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000000r 1 .export _CursorY
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000000r 1 .export _SETPIXEL
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000000r 1 .export _DRAWPIXEL
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000000r 1 .export _c
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@ -135,41 +136,16 @@ Current file: kimGFX.s
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000000r 1
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000000r 1 _screen:
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000000r 1 00 A0 .word $A000
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000002r 1 _CursorX:
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000002r 1 00 00 .word $0000
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000004r 1 _CursorY:
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000004r 1 00 00 .word $0000
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000006r 1
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000006r 1 .segment "RODATA"
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000002r 1
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000002r 1 .segment "RODATA"
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000000r 1
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000000r 1 S0005:
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000000r 1 20 20 20 36 .byte $20,$20,$20,$36,$30,$4B,$20,$52,$41,$4D,$20,$53,$59,$53,$54,$45
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000004r 1 30 4B 20 52
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000008r 1 41 4D 20 53
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000010r 1 4D 2E 20 20 .byte $4D,$2E,$20,$20,$34,$39,$31,$35,$32,$20,$42,$59,$54,$45,$53,$20
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000014r 1 34 39 31 35
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000018r 1 32 20 42 59
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000020r 1 46 52 45 45 .byte $46,$52,$45,$45,$2E,$00
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000024r 1 2E 00
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000026r 1 S0004:
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000026r 1 20 20 2A 2A .byte $20,$20,$2A,$2A,$2A,$20,$43,$4F,$4D,$4D,$4F,$44,$4F,$52,$45,$20
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00002Ar 1 2A 20 43 4F
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00002Er 1 4D 4D 4F 44
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000036r 1 4B 49 4D 2D .byte $4B,$49,$4D,$2D,$31,$20,$53,$48,$45,$4C,$4C,$20,$76,$31,$2E,$31
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00003Ar 1 31 20 53 48
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00003Er 1 45 4C 4C 20
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000046r 1 20 2A 2A 2A .byte $20,$2A,$2A,$2A,$00
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00004Ar 1 00
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00004Br 1 S0007:
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00004Br 1 44 6F 6E 65 .byte $44,$6F,$6E,$65,$2C,$20,$65,$78,$69,$74,$69,$6E,$67,$2E,$2E,$2E
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00004Fr 1 2C 20 65 78
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000053r 1 69 74 69 6E
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00005Br 1 0D 0A 00 .byte $0D,$0A,$00
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00005Er 1 S0006:
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00005Er 1 52 45 41 44 .byte $52,$45,$41,$44,$59,$2E,$0A,$00
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000062r 1 59 2E 0A 00
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000066r 1
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000066r 1 .segment "BSS"
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000000r 1 S0004:
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000000r 1 44 6F 6E 65 .byte $44,$6F,$6E,$65,$2C,$20,$65,$78,$69,$74,$69,$6E,$67,$2E,$2E,$2E
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000004r 1 2C 20 65 78
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000008r 1 69 74 69 6E
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000010r 1 0D 0A 00 .byte $0D,$0A,$00
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000013r 1
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000013r 1 .segment "BSS"
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000000r 1
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000000r 1 _c:
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000000r 1 00 00 .res 2,$00
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@ -243,20 +219,20 @@ Current file: kimGFX.s
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00004Fr 1 20 rr rr jsr pushax
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000052r 1 4C rr rr jmp L000F
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000055r 1 4C rr rr L0002: jmp L0007
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000058r 1 AD rr rr L0005: lda _CursorX
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000058r 1 AD rr rr L0005: lda _cursorX
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00005Br 1 38 sec
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00005Cr 1 E9 28 sbc #$28
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00005Er 1 8D rr rr sta _CursorX
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00005Er 1 8D rr rr sta _cursorX
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000061r 1 B0 03 bcs L0009
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000063r 1 CE rr rr dec _CursorX+1
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000066r 1 AE rr rr L0009: ldx _CursorX+1
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000069r 1 EE rr rr inc _CursorY
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000063r 1 CE rr rr dec _cursorX+1
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000066r 1 AE rr rr L0009: ldx _cursorX+1
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000069r 1 EE rr rr inc _cursorY
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00006Cr 1 D0 03 bne L000A
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00006Er 1 EE rr rr inc _CursorY+1
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000071r 1 AD rr rr L000A: lda _CursorY
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000074r 1 AE rr rr ldx _CursorY+1
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000077r 1 AD rr rr L0007: lda _CursorX
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00007Ar 1 AE rr rr ldx _CursorX+1
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00006Er 1 EE rr rr inc _cursorY+1
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000071r 1 AD rr rr L000A: lda _cursorY
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000074r 1 AE rr rr ldx _cursorY+1
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000077r 1 AD rr rr L0007: lda _cursorX
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00007Ar 1 AE rr rr ldx _cursorX+1
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00007Dr 1 C9 28 cmp #$28
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00007Fr 1 8A txa
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000080r 1 E9 00 sbc #$00
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@ -267,8 +243,8 @@ Current file: kimGFX.s
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000089r 1 A2 00 ldx #$00
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00008Br 1 2A rol a
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00008Cr 1 D0 CA jne L0005
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00008Er 1 AD rr rr lda _CursorY
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000091r 1 AE rr rr ldx _CursorY+1
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00008Er 1 AD rr rr lda _cursorY
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000091r 1 AE rr rr ldx _cursorY+1
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000094r 1 C9 19 cmp #$19
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000096r 1 8A txa
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000097r 1 E9 00 sbc #$00
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@ -282,8 +258,8 @@ Current file: kimGFX.s
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0000A7r 1 rr
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0000A8r 1 A2 00 ldx #$00
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0000AAr 1 A9 18 lda #$18
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0000ACr 1 8D rr rr sta _CursorY
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0000AFr 1 8E rr rr stx _CursorY+1
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0000ACr 1 8D rr rr sta _cursorY
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0000AFr 1 8E rr rr stx _cursorY+1
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0000B2r 1 20 rr rr jsr _ScrollScreen
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0000B5r 1 A0 01 L000B: ldy #$01
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0000B7r 1 20 rr rr jsr ldaxysp
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@ -295,11 +271,11 @@ Current file: kimGFX.s
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0000C8r 1 rr
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0000C9r 1 A2 00 ldx #$00
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0000CBr 1 A9 00 lda #$00
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0000CDr 1 8D rr rr sta _CursorX
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0000D0r 1 8E rr rr stx _CursorX+1
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0000D3r 1 EE rr rr inc _CursorY
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0000CDr 1 8D rr rr sta _cursorX
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0000D0r 1 8E rr rr stx _cursorX+1
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0000D3r 1 EE rr rr inc _cursorY
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0000D6r 1 D0 03 bne L000E
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0000D8r 1 EE rr rr inc _CursorY+1
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0000D8r 1 EE rr rr inc _cursorY+1
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0000DBr 1 A0 00 L000E: ldy #$00
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0000DDr 1 A2 00 ldx #$00
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0000DFr 1 A9 01 lda #$01
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@ -311,13 +287,13 @@ Current file: kimGFX.s
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0000EEr 1 20 rr rr jsr ldauidx
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0000F1r 1 8D rr rr sta _c
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0000F4r 1 8E rr rr stx _c+1
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0000F7r 1 AE rr rr ldx _CursorX
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0000FAr 1 AC rr rr ldy _CursorY
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0000F7r 1 AE rr rr ldx _cursorX
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0000FAr 1 AC rr rr ldy _cursorY
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0000FDr 1 AD rr rr lda _c
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000100r 1 20 rr rr jsr _DrawChar
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000103r 1 EE rr rr inc _CursorX
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000103r 1 EE rr rr inc _cursorX
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000106r 1 D0 03 bne L0010
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000108r 1 EE rr rr inc _CursorX+1
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000108r 1 EE rr rr inc _cursorX+1
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00010Br 1 A0 00 L0010: ldy #$00
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00010Dr 1 A2 00 ldx #$00
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00010Fr 1 A9 01 lda #$01
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@ -346,12 +322,12 @@ Current file: kimGFX.s
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000127r 1 20 rr rr jsr pushax
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00012Ar 1 A0 05 ldy #$05
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00012Cr 1 20 rr rr jsr ldaxysp
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00012Fr 1 8D rr rr sta _CursorX
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000132r 1 8E rr rr stx _CursorX+1
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00012Fr 1 8D rr rr sta _cursorX
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000132r 1 8E rr rr stx _cursorX+1
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000135r 1 A0 03 ldy #$03
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000137r 1 20 rr rr jsr ldaxysp
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00013Ar 1 8D rr rr sta _CursorY
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00013Dr 1 8E rr rr stx _CursorY+1
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00013Ar 1 8D rr rr sta _cursorY
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00013Dr 1 8E rr rr stx _cursorY+1
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000140r 1 A0 01 ldy #$01
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000142r 1 20 rr rr jsr ldaxysp
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000145r 1 20 rr rr jsr _DrawText
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@ -776,79 +752,53 @@ Current file: kimGFX.s
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0004D1r 1
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0004D1r 1 20 rr rr jsr decsp2
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0004D4r 1 20 rr rr jsr _ClearScreen
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0004D7r 1 A2 00 ldx #$00
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0004D9r 1 A9 00 lda #$00
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0004DBr 1 20 rr rr jsr pushax
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0004DEr 1 A2 00 ldx #$00
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0004E0r 1 A9 00 lda #$00
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0004E2r 1 20 rr rr jsr pushax
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0004E5r 1 A9 rr lda #<(S0004)
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0004E7r 1 A2 rr ldx #>(S0004)
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0004E9r 1 20 rr rr jsr _DrawTextAt
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0004ECr 1 A2 00 ldx #$00
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0004EEr 1 A9 00 lda #$00
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0004F0r 1 20 rr rr jsr pushax
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0004F3r 1 A2 00 ldx #$00
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0004F5r 1 A9 02 lda #$02
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0004F7r 1 20 rr rr jsr pushax
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0004FAr 1 A9 rr lda #<(S0005)
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0004FCr 1 A2 rr ldx #>(S0005)
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0004FEr 1 20 rr rr jsr _DrawTextAt
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000501r 1 A2 00 ldx #$00
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000503r 1 A9 00 lda #$00
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000505r 1 20 rr rr jsr pushax
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000508r 1 A2 00 ldx #$00
|
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00050Ar 1 A9 04 lda #$04
|
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00050Cr 1 20 rr rr jsr pushax
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00050Fr 1 A9 rr lda #<(S0006)
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000511r 1 A2 rr ldx #>(S0006)
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000513r 1 20 rr rr jsr _DrawTextAt
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000516r 1 A2 00 ldx #$00
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000518r 1 A9 05 lda #$05
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00051Ar 1 A0 00 ldy #$00
|
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00051Cr 1 20 rr rr jsr staxysp
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00051Fr 1 A0 01 L0002: ldy #$01
|
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000521r 1 20 rr rr jsr ldaxysp
|
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000524r 1 C9 50 cmp #$50
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000526r 1 8A txa
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000527r 1 E9 00 sbc #$00
|
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000529r 1 50 02 bvc L0006
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||||
00052Br 1 49 80 eor #$80
|
||||
00052Dr 1 0A L0006: asl a
|
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00052Er 1 A9 00 lda #$00
|
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000530r 1 A2 00 ldx #$00
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000532r 1 2A rol a
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000533r 1 F0 03 4C rr jne L0005
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000537r 1 rr
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000538r 1 4C rr rr jmp L0003
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00053Br 1 A2 00 L0005: ldx #$00
|
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00053Dr 1 A9 A0 lda #$A0
|
||||
00053Fr 1 20 rr rr jsr pushax
|
||||
000542r 1 A2 00 ldx #$00
|
||||
000544r 1 A9 78 lda #$78
|
||||
000546r 1 20 rr rr jsr pushax
|
||||
000549r 1 A0 05 ldy #$05
|
||||
00054Br 1 20 rr rr jsr ldaxysp
|
||||
00054Er 1 20 rr rr jsr pushax
|
||||
000551r 1 A2 00 ldx #$00
|
||||
000553r 1 A9 01 lda #$01
|
||||
000555r 1 20 rr rr jsr _DrawCircleC
|
||||
000558r 1 A0 00 ldy #$00
|
||||
00055Ar 1 A2 00 ldx #$00
|
||||
00055Cr 1 A9 05 lda #$05
|
||||
00055Er 1 20 rr rr jsr addeqysp
|
||||
000561r 1 4C rr rr jmp L0002
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||||
000564r 1 A9 rr L0003: lda #<(S0007)
|
||||
000566r 1 A2 rr ldx #>(S0007)
|
||||
000568r 1 20 rr rr jsr pushax
|
||||
00056Br 1 A0 02 ldy #$02
|
||||
00056Dr 1 20 rr rr jsr _printf
|
||||
000570r 1 A2 00 ldx #$00
|
||||
000572r 1 A9 00 lda #$00
|
||||
000574r 1 4C rr rr jmp L0001
|
||||
000577r 1 20 rr rr L0001: jsr incsp2
|
||||
00057Ar 1 60 rts
|
||||
00057Br 1
|
||||
00057Br 1 .endproc
|
||||
00057Br 1
|
||||
00057Br 1
|
||||
0004D7r 1 20 rr rr jsr _Demo
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||||
0004DAr 1 A2 00 ldx #$00
|
||||
0004DCr 1 A9 05 lda #$05
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||||
0004DEr 1 A0 00 ldy #$00
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0004E0r 1 20 rr rr jsr staxysp
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||||
0004E3r 1 A0 01 L0002: ldy #$01
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||||
0004E5r 1 20 rr rr jsr ldaxysp
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||||
0004E8r 1 C9 50 cmp #$50
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||||
0004EAr 1 8A txa
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||||
0004EBr 1 E9 00 sbc #$00
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||||
0004EDr 1 50 02 bvc L0006
|
||||
0004EFr 1 49 80 eor #$80
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||||
0004F1r 1 0A L0006: asl a
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0004F2r 1 A9 00 lda #$00
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||||
0004F4r 1 A2 00 ldx #$00
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||||
0004F6r 1 2A rol a
|
||||
0004F7r 1 F0 03 4C rr jne L0005
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0004FBr 1 rr
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||||
0004FCr 1 4C rr rr jmp L0003
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||||
0004FFr 1 A2 00 L0005: ldx #$00
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||||
000501r 1 A9 A0 lda #$A0
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||||
000503r 1 20 rr rr jsr pushax
|
||||
000506r 1 A2 00 ldx #$00
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||||
000508r 1 A9 78 lda #$78
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||||
00050Ar 1 20 rr rr jsr pushax
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||||
00050Dr 1 A0 05 ldy #$05
|
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00050Fr 1 20 rr rr jsr ldaxysp
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||||
000512r 1 20 rr rr jsr pushax
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||||
000515r 1 A2 00 ldx #$00
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||||
000517r 1 A9 01 lda #$01
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||||
000519r 1 20 rr rr jsr _DrawCircleC
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||||
00051Cr 1 A0 00 ldy #$00
|
||||
00051Er 1 A2 00 ldx #$00
|
||||
000520r 1 A9 05 lda #$05
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||||
000522r 1 20 rr rr jsr addeqysp
|
||||
000525r 1 4C rr rr jmp L0002
|
||||
000528r 1 A9 rr L0003: lda #<(S0004)
|
||||
00052Ar 1 A2 rr ldx #>(S0004)
|
||||
00052Cr 1 20 rr rr jsr pushax
|
||||
00052Fr 1 A0 02 ldy #$02
|
||||
000531r 1 20 rr rr jsr _printf
|
||||
000534r 1 A2 00 ldx #$00
|
||||
000536r 1 A9 00 lda #$00
|
||||
000538r 1 4C rr rr jmp L0001
|
||||
00053Br 1 20 rr rr L0001: jsr incsp2
|
||||
00053Er 1 60 rts
|
||||
00053Fr 1
|
||||
00053Fr 1 .endproc
|
||||
00053Fr 1
|
||||
00053Fr 1
|
||||
|
|
|
|||
|
|
@ -20,6 +20,7 @@
|
|||
.export _AscToPet
|
||||
.export _ReverseBits
|
||||
.export _DrawChar
|
||||
.export _Demo
|
||||
|
||||
.import _font8x8_basic
|
||||
|
||||
|
|
@ -59,6 +60,9 @@ _x1cord: .res 2
|
|||
_x2cord: .res 2
|
||||
_y1cord: .res 2
|
||||
_y2cord: .res 2
|
||||
_cursorX: .res 1
|
||||
_cursorY: .res 1
|
||||
tempchar: .res 1
|
||||
xval: .res 2 ; These could move to zeropage for perf, but presume we
|
||||
yval: .res 2 ; we want to minimize the amount we grow zero page use
|
||||
err: .res 2
|
||||
|
|
@ -71,6 +75,8 @@ y0: .res 2
|
|||
.export _x2cord
|
||||
.export _y1cord
|
||||
.export _y2cord
|
||||
.export _cursorX
|
||||
.export _cursorY
|
||||
|
||||
.segment "CODE"
|
||||
|
||||
|
|
@ -202,7 +208,12 @@ _ClearScreen:
|
|||
; ScrollScreen - Scrolls the entire video memory (and thus the screen) up one row
|
||||
;-----------------------------------------------------------------------------------
|
||||
|
||||
_ScrollScreen:
|
||||
_ScrollScreen: pha
|
||||
tya
|
||||
pha
|
||||
txa
|
||||
pha
|
||||
|
||||
; Load the source (A140) and destination (A000) addresses. Each row of characters
|
||||
; occupies 320 bytes, so we start source as being one line ahead of the destination
|
||||
; which will have the effect of scrolling the screen up one text line.
|
||||
|
|
@ -235,6 +246,12 @@ _ScrollScreen:
|
|||
sta SCREEN+$1E00, y
|
||||
dey
|
||||
bne :-
|
||||
|
||||
pla
|
||||
txa
|
||||
pla
|
||||
tya
|
||||
pla
|
||||
rts
|
||||
|
||||
;-----------------------------------------------------------------------------------
|
||||
|
|
@ -617,50 +634,130 @@ ScreenLineAddresses:
|
|||
;-----------------------------------------------------------------------------------
|
||||
; 0 <= x < 40
|
||||
; 0 <= y < 25
|
||||
; Preserves all registers
|
||||
;-----------------------------------------------------------------------------------
|
||||
|
||||
_DrawChar: pha
|
||||
|
||||
tya ; Get the address in screen memory where this
|
||||
asl ; character X/Y cursor pos should be drawn
|
||||
tay
|
||||
txa
|
||||
clc
|
||||
adc ScreenLineAddresses, y
|
||||
sta adp1_lo
|
||||
sta dest_lo
|
||||
lda ScreenLineAddresses+1, y
|
||||
adc #0
|
||||
sta adp1_hi
|
||||
sta dest_hi
|
||||
|
||||
lda #0 ; Get the address in font memory where this
|
||||
sta adp2_hi ; Petscii chracter lives (after conversion from
|
||||
sta src_hi ; Petscii chracter lives (after conversion from
|
||||
|
||||
pla ; ascii)
|
||||
|
||||
sty temp2
|
||||
jsr _AscToPet
|
||||
ldy temp2
|
||||
|
||||
asl
|
||||
rol adp2_hi
|
||||
rol src_hi
|
||||
asl
|
||||
rol adp2_hi
|
||||
rol src_hi
|
||||
asl
|
||||
rol adp2_hi
|
||||
rol src_hi
|
||||
clc
|
||||
adc #<_font8x8_basic ; Add the base address of the font table to the offset
|
||||
sta adp2_lo
|
||||
lda adp2_hi
|
||||
sta src_lo
|
||||
lda src_hi
|
||||
adc #>_font8x8_basic
|
||||
sta adp2_hi
|
||||
sta src_hi
|
||||
|
||||
ldy #0 ; opy the character def to the screen, one byte at a time
|
||||
ldx #0
|
||||
: lda (adp2), y ; Copy this byte from the character def to the screen target
|
||||
sta (adp1, x)
|
||||
lda adp1_lo ; Advance to the next "scanline", or pixel row, down
|
||||
: lda (src), y ; Copy this byte from the character def to the screen target
|
||||
sta (dest, x)
|
||||
lda dest_lo ; Advance to the next "scanline", or pixel row, down
|
||||
clc
|
||||
adc #<BYTESPERROW
|
||||
sta adp1_lo
|
||||
lda adp1_hi
|
||||
sta dest_lo
|
||||
lda dest_hi
|
||||
adc #>BYTESPERROW
|
||||
sta adp1_hi
|
||||
sta dest_hi
|
||||
|
||||
iny
|
||||
cpy #8
|
||||
bne :-
|
||||
|
||||
rts
|
||||
|
||||
|
||||
|
||||
;-----------------------------------------------------------------------------------
|
||||
; DrawText - Draws an ASCII string at the current cursor position
|
||||
;-----------------------------------------------------------------------------------
|
||||
; XY - Pointer to the string to draw, stops on NUL or 255 chars later
|
||||
;-----------------------------------------------------------------------------------
|
||||
|
||||
_DrawText: stx adp1_lo
|
||||
sty adp1_hi
|
||||
ldy #0
|
||||
@char: lda (adp1), y
|
||||
sta tempchar
|
||||
beq doneText
|
||||
|
||||
lda _cursorX ; if X >= CHARSPERROW, we need to advance to the next line
|
||||
cmp #CHARSPERROW-1
|
||||
bcc :+
|
||||
|
||||
lda #0 ; Back to the left edge
|
||||
sta _cursorX
|
||||
inc _cursorY ; Advance to the next line
|
||||
|
||||
: lda _cursorY
|
||||
cmp #ROWSPERCOLUMN - 1 ; Check to see if we've gone off the bottom of the screen
|
||||
bcc :+
|
||||
|
||||
lda #ROWSPERCOLUMN - 1 ; If we have, we scroll the screen and back up to the last line again
|
||||
sta _cursorY
|
||||
jsr _ScrollScreen
|
||||
|
||||
: lda tempchar ; If the character is 0A, we advance to the next line
|
||||
cmp #$0a
|
||||
bne :+
|
||||
|
||||
lda #0 ; Back to the left edge
|
||||
sta _cursorX
|
||||
inc _cursorY ; Advance to the next line
|
||||
iny
|
||||
bne @char
|
||||
|
||||
: tya
|
||||
pha
|
||||
lda tempchar
|
||||
ldx _cursorX
|
||||
ldy _cursorY
|
||||
jsr _DrawChar
|
||||
pla
|
||||
tay
|
||||
|
||||
inc _cursorX
|
||||
iny
|
||||
bne @char
|
||||
|
||||
doneText: rts
|
||||
|
||||
demoText1: .byte " *** COMMODORE KIM-1 SHELL V0.1 ***", $0A, $0A
|
||||
.byte " 60K RAM SYSTEM. 49152 BYTES FREE.", $0A, $0A
|
||||
.byte "READY.", $0A, 00
|
||||
|
||||
_Demo: lda #0
|
||||
sta _cursorX
|
||||
sta _cursorY
|
||||
ldx #<demoText1
|
||||
ldy #>demoText1
|
||||
jsr _DrawText
|
||||
rts
|
||||
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
Binary file not shown.
Loading…
Reference in New Issue
Block a user