forked from amberisvibin/chibi-pc09
remove old data from docs/
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TTL devices can handle CMOS input. HD6309 -> 74LS612
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CMOS devices may or may not handle TTL input. 74LS612 -> peripherals
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62256 SRAM, 28C256 EEPROM, 16550 UART all handle TTL input.
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82C42 lists it's outputs as TTL compatible, but says nothing for inputs.
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Must ensure all peripherals are rated for TTL input.
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@@ -3,7 +3,6 @@
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File descriptions:
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File descriptions:
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- links.txt contains useful links i would like to keep
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- links.txt contains useful links i would like to keep
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- 6809-sn74ls612_timing.md contains notes on the mmu and cpu interface
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- tech-spec.md contains basic info on layout of system (outdated)
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- tech-spec.md contains basic info on layout of system (outdated)
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- timing.html contains info on vga timing pulled from https://martin.hinner.info/vga/timing.html
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- timing.html contains info on vga timing pulled from https://martin.hinner.info/vga/timing.html
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- vga_ram.txt contains notes on ram size for the vga card
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- vga_ram.txt contains notes on ram size for the vga card
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