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Some years ago (~10) my Macintosh Classic II working Ok, but now when power on - "standart" chekboard, no surprises. Computer board now is recaped, but is still checkboard on screen. When in my Classic connecting logic board from other Mac Classic - all fine, boot up and working. All voltages...

I have ZX Spectrum +2 and RS232 adapter (in picture). Adapter works, but i don't understand - how it can work in "full-duplex", because example code is only to set Basic in "RX', or to "TX" mode. Maybe someone has experience coding Basic so that the device works with this adapter as a "dumb...

I have CBM 3032 and want to use it as dumb terminal. From other people experiments i understand, for that purposes can be used "user port" and TTL adapter to RS232 serial port. But what i don't understand - how from Commodore Basic directly send/receive data via user port, without loading any...

Hello. I have Sun Fire V890 with history story "it should work" and without any HDD. Everithing inside doors looks Ok, but when i try to start it up system started ~2 minutes "disco" with leds and after all that halted with 2 blinking leds - "system emergency" and "ready to swap" (what need to...