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  • alecv's Avatar
    October 13th, 2017, 12:41 PM
    alecv replied to a thread NEC V20's on ebay... in PCs and Clones
    JFYI: http://phg.chat.ru/opcode.txt It seems this is compilation from the Ralf Brown's Interrsupt List. Search "NEC" for V-xx specific...
    43 replies | 1926 view(s)
  • alecv's Avatar
    October 13th, 2017, 12:01 AM
    alecv replied to a thread NEC V20's on ebay... in PCs and Clones
    AFAIK, some NEC V20 instructions binary codes conflict with 386+. Fortunately most useful POPA/PUSHA and INSx/OUTx use the same code as "official"...
    43 replies | 1926 view(s)
  • alecv's Avatar
    September 23rd, 2017, 07:09 PM
    I think, FPGA version is faster and more easy to run. This board http://cpu-ns32k.net/PC632M.html may be modifyed with 3.3/5V level shifter to...
    28 replies | 2199 view(s)
  • neozeed's Avatar
    September 22nd, 2017, 09:24 AM
    I was hoping it didn't just go and die... Although even in this day and age ISA machines are getting rare, even 32bit 3.3v PCI is getting harder to...
    28 replies | 2199 view(s)
  • alecv's Avatar
    September 19th, 2017, 11:15 PM
    alecv replied to a thread NEC V20's on ebay... in PCs and Clones
    There is even faster 16MHZ CMOS D70108HCZ-16 (good for overclocking)...
    43 replies | 1926 view(s)
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