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I'm going to apply the same workaround -- have you committed yours?

SM 7238 aka T3300 -- yet another DECclone, likely not of a DEC original, but of something compatible -- this one is Intel MCS80-based, with no character generator chip. Technical manual is rather good, and mentions a graphics option with Tek 401x and ReGIS features.

Any ETA when your code will be ready to include in MAME.

Also it would be cool to give some tutorial od running simh and mame in parallel with examples

I believe the added copyright notice on startup between vt240 v2.1 and v2.2 roms was added because of the cit220+ design patent lawsuit by DEC, they trademarked the layout of that setup screen (or tried to), which as can be seen above the same layout is also used on the SM 7238 aka T3300.

LN

Micko: sm7238 is missing a few features and has video errors but otherwise ready to submit.

pdp11 stuff is harder; 1801VM2 core has to be cleanly split from T11 core, and needs a better way to handle bus errors than making execute_set_input public. I'll push my wip tree so you can see why

In my wip I've added basic flow control to null_modem and I think this exposed a bug in i8251 (writes at https://github.com/mamedev/mame/blob/master/src/devices/machine/i8251.cpp#L419 shouldn't be inverted), maybe others have it wrong too.

I believe you're correct, at least from the comment there:


Which says that /RTS (inverted RTS by typographical convention) is 1 when the bit is 0, so plain RTS is 0 when the bit is 0.

But the code does:


which is the opposite.

Here's some motivation to get the ms7004 keyboard working.

It's working in dvk_ksm and dvk_kcgd -- it wants 4960 baud clock, not 4800. EDIT: Actually, 4960*64, not 4960*16 ...and it's working for me (this is lynx showing https://koi8.pp.ru):

video of poisk1 with its sound card, running speech synth demo from softlist under "Sigma-Four" DOS clone:



(no subtitles yet)

Nifty. But don't post any speech synthesizers where plgDavid can see them ;-)