mirror of https://github.com/makarcz/vm6502.git
99 lines
1.2 KiB
Plaintext
99 lines
1.2 KiB
Plaintext
; ADC, test decimal mode.
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;
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; NV-BDIZC
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; ??1110??
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;
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; The results I got on Rockwell 6502 AP
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;
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; 00 + 00 and C=0 gives 00 and N=0 V=0 Z=1 C=0 (3A)
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; 79 + 00 and C=1 gives 80 and N=1 V=1 Z=0 C=0 (F8)
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; 24 + 56 and C=0 gives 80 and N=1 V=1 Z=0 C=0 (F8)
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; 93 + 82 and C=0 gives 75 and N=0 V=1 Z=0 C=1 (79)
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; 89 + 76 and C=0 gives 65 and N=0 V=0 Z=0 C=1 (39)
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; 89 + 76 and C=1 gives 66 and N=0 V=0 Z=0 C=1 (39)
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; 80 + f0 and C=0 gives d0 and N=1 V=1 Z=0 C=1 (F9)
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; 80 + fa and C=0 gives e0 and N=1 V=0 Z=0 C=1 (B9)
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; 2f + 4f and C=0 gives 74 and N=0 V=0 Z=0 C=0 (38)
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; 6f + 00 and C=1 gives 76 and N=0 V=0 Z=0 C=0 (38)
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RES=$0300
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*=$0200
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SED
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CLC
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LDA #$00
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ADC #$00
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STA RES
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PHP
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PLA
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STA RES+1
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SEC
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LDA #$79
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ADC #$00
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STA RES+2
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PHP
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PLA
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STA RES+3
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CLC
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LDA #$24
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ADC #$56
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STA RES+4
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PHP
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PLA
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STA RES+5
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CLC
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LDA #$93
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ADC #$82
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STA RES+6
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PHP
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PLA
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STA RES+7
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CLC
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LDA #$89
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ADC #$76
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STA RES+8
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PHP
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PLA
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STA RES+9
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SEC
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LDA #$89
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ADC #$76
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STA RES+10
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PHP
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PLA
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STA RES+11
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CLC
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LDA #$80
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ADC #$F0
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STA RES+12
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PHP
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PLA
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STA RES+13
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CLC
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LDA #$80
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ADC #$FA
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STA RES+14
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PHP
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PLA
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STA RES+15
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CLC
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LDA #$2F
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ADC #$4F
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STA RES+16
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PHP
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PLA
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STA RES+17
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SEC
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LDA #$6F
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ADC #$00
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STA RES+18
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PHP
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PLA
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STA RES+19
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BRK
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*=$0300
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.DS 20
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