download
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SCHEMATICS Version 1.3 |
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| Chrome Schematic diagram (pdf file) | download |
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| PCB top copper layer (pdf file) | download |
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| PCB bottom copper layer (pdf file) | download |
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| Bill of Components (txt file) | download | ||
| board assembly diagram | download |
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SCHEMATICS old version |
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| Chrome Schematic diagram (pdf file) | download | ||
| PCB top copper layer (pdf file) | download | ||
| PCB bottom copper layer (pdf file) | download | ||
| PCB silkscreen (pdf file) | download | ||
| Bill of Components (txt file) | download | ||
| board assembly diagram | download | ||
| homemade keyboard schematic | download | ||
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CPLD |
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| ULA 1 (jedec file) | download |
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| ULA 2 (jedec file) | download |
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| last version, nov 2012,perfect timings and floating bus emulation with 128K timings, 14.318 MHz crystal. For the old board there is a mandatory modification, connect XC95108 pin 26 to z80 mreq cutting the trace to M1 signal. see schematic version 1.3 for info. |
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GALS |
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| GAL 1 (jedec file) | download | ||
| GAL 2 (jedec file) | download | ||
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ROMS |
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| Chrome bios 1.8 + zx roms (bin file) | download | ||
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DATASHEETS |
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| Z80 8 bit microprocessor (pdf) | download | ||
| 6264 8Kx8 static ram (pdf) | download | ||
| 62256 32Kx8 static ram (pdf) | download | ||
| K6T1008 128Kx8 static ram (pdf) | download | ||
| 27C64 8Kx8 eprom (pdf) | download | ||
| 27C512 64Kx8 eprom (pdf) | download | ||
| Gal20v8 (pdf) | download | ||
| AY-3-8912 (pdf) | download | ||
| WD1772 (rar file) | download |