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Re: ex- USSR and Soviet Bloc hardware [Re: judge] #106356 07/04/16 09:52 PM
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shattered Offline OP
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Originally Posted By judge

I ran into a similar problem while working on the gameboy driver. It should eventually be fixed once a cpu core becomes sub-cycle accurate. I worked around this by making the execute_set_input method public and calling that directly as well from the driver code.


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

Re: ex- USSR and Soviet Bloc hardware [Re: shattered] #106485 07/11/16 09:55 PM
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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.




Re: ex- USSR and Soviet Bloc hardware [Re: shattered] #106488 07/12/16 08:24 AM
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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

Re: ex- USSR and Soviet Bloc hardware [Re: shattered] #106489 07/12/16 08:33 AM
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Lord Nightmare Online Content
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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


"When life gives you zombies... *CHA-CHIK!* ...you make zombie-ade!"
Re: ex- USSR and Soviet Bloc hardware [Re: shattered] #106509 07/13/16 07:32 AM
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shattered Offline OP
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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 smile

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.

Re: ex- USSR and Soviet Bloc hardware [Re: shattered] #106510 07/13/16 12:26 PM
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I believe you're correct, at least from the comment there:

Code:
	    bit 5:
	        0 = /RTS set to 1
	        1 = /RTS set to 0


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:

Code:
m_rts_handler(!BIT(data, 5));


which is the opposite.

Re: ex- USSR and Soviet Bloc hardware [Re: shattered] #106513 07/13/16 10:23 PM
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Here's some motivation to get the ms7004 keyboard working.


Re: ex- USSR and Soviet Bloc hardware [Re: shattered] #106514 07/13/16 10:25 PM
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shattered Offline OP
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It's working in dvk_ksm and dvk_kcgd -- it wants 4960 baud clock, not 4800. EDIT: Actually, 4960*64, not 4960*16 smile ...and it's working for me (this is lynx showing https://koi8.pp.ru):


Last edited by shattered; 07/13/16 11:11 PM.
Re: ex- USSR and Soviet Bloc hardware [Re: shattered] #106577 07/23/16 09:50 PM
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shattered Offline OP
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video of poisk1 with its sound card, running speech synth demo from softlist under "Sigma-Four" DOS clone:

https://youtu.be/y4OGNWjyqbI

(no subtitles yet)

Re: ex- USSR and Soviet Bloc hardware [Re: shattered] #106578 07/24/16 01:18 AM
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Nifty. But don't post any speech synthesizers where plgDavid can see them ;-)

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