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...aaand there's yet another clone, PK88, apparently a predecssor of mc1502: http://fincoins.spb.ru/oldpc/pk88/pk88.html

Send in the clones!

I will. Here's how much we're missing: ru.wikipedia - clones

Some of them are very obscure and may not be original designs, just generic Taiwanese beige boxes.

Sorry, my bad, that's a native-speaker joke, not a command

"Send in the clowns" is a famous song.

Well, one learns something new every day

minor progress with poisk1: some tests are running


�poisk1 WIP: p1_t_ram.rf4�


�poisk1 WIP: p1_t_i_o.rf4�

Nice work. It's amusing to see a random English language stop sign on a Soviet-era machine that's otherwise in Cyrillic

Well, it's international traffic sign

poisk1: hooked up cassette input and parts of the keyboard, here it tries to load BASIC from tape (and ultimately fails).



Also, the mc1502 does not boot from disk now -- I think the 'reset PC by 1' hack in pc_state::mc1502_wd17xx_drq_r is no longer working.

There's no reason it shouldn't work, unless it needs to be "reset PC by 2" now or something