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December 9, 2025 15:08
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FM-11 Z80 CARD CONTROL
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| Name FM11Z80CTRL; | |
| PartNo FM11Z80; | |
| Revision 01; | |
| Date 25/12/09; | |
| Designer Katunori Takesita; | |
| Company MSD; | |
| Assembly ; | |
| Location ; | |
| Device G22V10; | |
| /* INPUTS */ | |
| Pin 1 = CLK; /* Z80PHI */ | |
| Pin 2 = !WAITZ; | |
| Pin 3 = !M1; | |
| pin 4 = !MREQ; | |
| pin 5 = MRDY; | |
| pin 6 = !RFSH; | |
| pin 7 = !RD; | |
| pin 8 = EDIN; | |
| pin 9 = !RESET; /* "1"=8088 */ | |
| /* pin 12 GND */ | |
| /* pin 13 = OE; */ | |
| /* OUTPUTS */ | |
| /* pin 24 Vcc */ | |
| Pin 23 = !Z80ENABLE; | |
| Pin 22 = !WAIT; | |
| Pin 21 = !REFCK0; | |
| Pin 20 = RWB0; | |
| Pin 19 = WA1; | |
| Pin 18 = WA2; | |
| Pin 17 = M11; | |
| Pin 16 = M12; | |
| Pin 15 = MRQ; | |
| Pin 14 = !EBU; | |
| REFCK0.ar = RESET; | |
| RWB0.ar = RESET; | |
| WA1.ar = RESET; | |
| WA2.ar = RESET; | |
| M11.ar = RESET; | |
| M12.ar = RESET; | |
| MRQ.ar = RESET; | |
| WA1.sp = 'b'0; | |
| WA2.sp = 'b'0; | |
| MRQ.sp = 'b'0; | |
| REFCK0.sp = 'b'0; | |
| WA1.d = !WAITZ; | |
| WA2.d = WA1; | |
| Z80ENABLE = WA2 & !WAITZ; | |
| MRQ.d = !(MREQ & !MRDY); | |
| /* M11.sp = Z80ENABLE; */ | |
| /* M12.sp = Z80ENABLE; */ | |
| M11.d = !M1 # Z80ENABLE; | |
| M12.d = M11 # Z80ENABLE; | |
| WAIT = !MRQ # (M1 & M12); | |
| REFCK0.d = !(MREQ & !MRDY); | |
| RWB0.d = !(MREQ & !RFSH & !RD) # MREQ; | |
| /* RWB0.sp = MREQ; */ | |
| EBU = RWB0 & !RD; |
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