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FM-11 Z80 CARD MAIN DECODER
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| Name FM11ZDEC0; | |
| PartNo FM11Z80; | |
| Revision 01; | |
| Date 25/12/07; | |
| Designer Katunori Takesita; | |
| Company ; | |
| Assembly ; | |
| Location ; | |
| Device G22V10; | |
| /* INPUTS */ | |
| Pin 1 = A0; | |
| Pin 2 = A1; | |
| Pin 3 = A2; | |
| Pin 4 = A3; | |
| Pin 5 = A4; | |
| Pin 6 = A5; | |
| Pin 7 = A6; | |
| Pin 8 = A8; | |
| Pin 9 = A10; | |
| Pin 10 = A11; | |
| /* Pin 11 */ | |
| /* Pin 12 */ | |
| Pin 13 = !EXDEC; /* A15A14A13A12!A9!A7 ,LS138 */ | |
| /* Pin14 GND */ | |
| Pin 19 = !RD; | |
| Pin 18 = !WAITZ; | |
| Pin 17 = !IOHB; | |
| Pin 16 = RWB; | |
| Pin 15 = !EBD; /* WRITE PULSE */ | |
| /* OUTPUTS */ | |
| /* Pin24 Vcc */ | |
| Pin 23 = !MASKSET; | |
| Pin 22 = !MASKRD; | |
| Pin 21 = !BANKSET; | |
| Pin 20 = !BANKRD; | |
| /* 1111_1101_0xxx_xxxx */ | |
| $DEFINE DECH (EXDEC & A11 & A10 & A8) | |
| /* 101_0000 */ | |
| $DEFINE DECZ ( A6 & !A5 & A4 & !A3 & !A2 & !A1 & !A0) | |
| /* 010_1111 */ | |
| $DEFINE DECM (!A6 & A5 & !A4 & A3 & A2 & A1 & A0) | |
| $DEFINE Z80ACC (DECH & DECZ & !WAITZ) | |
| $DEFINE MASACC (DECH & DECM & !IOHB) | |
| MASKSET = EBD & DECH & DECZ & !WAITZ & !RWB; | |
| MASKRD = RD & DECH & DECZ & !WAITZ & RWB; | |
| BANKSET = EBD & DECH & DECM & !IOHB & !RWB; | |
| BANKRD = EBD & DECH & DECM & !IOHB & RWB; |
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