DIY Ethernet board for IBM PCjr
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WizNet module that I plan to use is WIZ812MJ and it has chip W5100 on board that is able to work in so called “indirect mode” when internal 32KB memory are accessible not through full-scale 15-bit address bus, but through 4 registers (addressed by only 2 address lines) and I plan to use exactly this because of lack of address lines in modem slot of IBM PCjr.
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