6502 HEX MONITOR LISTING
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FF00 FF01 FF02 FF04 FF07 FF09 FF0C FF0F FF11 FF13 FF15 FF17 FF18 FF1A FF1C FF1F FF21 FF24 FF26 FF27 FF29 FF20 FF2E FF31 FF34 FF37 FF39 FF35 FF3D FF3F FF40 FF41 FF43 FF44 FF47 FF49 FF4B FF4D FF4F FF51 FF53 FF55 FF57 FF59 FF5B FF5D FFBF FF62 FF64 FF66 FF68 FFCA FF6C FFCE FF6F FF70 FF71 FF72 FF74 |
D8 58 A0 7F SC 12 D0 A9 A7 8D 11 DO 8D 13 DO C9 DF FO 1 3 C9 95 FO 03 C8 10 OF A9 DC 20 EF FF A9 8D 20 EF FF A0 01 88 30 F6 AD 11 D0 10 FB AD 10 D0 99 00 02 20 EF FF C9 8D DO D4 AO EF A9 00 AA 0A 85 2B C8 B9 00 02 C9 8D FO D4 C9 AB 90 F4 F0 F0 C9 BA FO EB 09 L)2 pa 3n 86 28 86 29 84 ZA 59 00 02 49 50 C9 0A 90 06 69 88 C9 FA 90 11 0A OA 0A 0A A2 04 0A |
RESET NOTCR ESCAPE QETLINE BACKSPACE NEXTCHAR SETSTOR SETMODE BLSKIP NEXT ITEM NEXTHEX DIG HEXSHIFT |
CLD CLI LDY #$7P STY DSP LDA 4$A7 STA KBD CR STA DSP CR OMP #$DF BEQ BACKSPACE OMP #$9B BEG ESCAPE INY BPL NEXTCHAR LDA #$r)C JSR FOlIO LDA #$8D JSR ECHO LDY #$01 DEY SMI GETLINE LDA RED CR BPL NEXTOHAR LDA KBD STA IN, Y JSR ECHO OMP #$8D SNE NOTOR LDY #$FF LDA #sao TAX ASL STA MODE INY LDA IN, Y OMP #$SD BEO CETLINE OMP #$AE BOO BLSKIP BEG SETMOI)S CMP #$BA BEG SETSTOR CMP #$D2 BEQ RUN STX L STX H STY YSAV LDA IN. Y FOR #$BO CMP #$OA BCC DIG ADO #$88 OMP #$FA BOO NOTHEX ASL ASL ASL ASL LDX #$04 ASL |
Clear decimal arithmetic mode. Mask for DSP data direction register. Set it up. KIAD and DSP control register mask. Enable interrupts, set CA1. OBI, for positive edge sense/output mode. "<-"? Yes. ESC? Yes. Advance text index. Auto ESC if >127. "\" Output it. CR. Output it. Initiallize text index, Backup text index. Beyond start of line, reinitialize, Key ready? Loop until ready. Load character. 57 should be "1" . Add to text buffer. Display cha racte r. OR? No. Reset text index. For XAM mode. 0->X. Leaves $7IB if setting STOP mode. $00 = XAM $7B = STOP, $AE = BLOK XAM. Advance text index, Get character, OR? Yes, done this line, "."? Skip delimiter. Set BLOCK XAM mode. ":"? Yes, set STOP mode. "R"? Yes, run user program. $00->L. and 14, Save V for comparison. Get character for hex test. Map digits to SO -9. Digit? Yes. Map letter "A"-"F" to SFA-FF. Hex letter? No, character not hex, Hex digit to MSD of A, Shift count. Hex digit left MSB to carry. |
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