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https://www.youtube.com/watch?v=gbjEco-Lx_I -- Alice in Wonderland (translation patch) in attract mode. Compare with original: https://www.youtube.com/watch?v=6ff1gTH_6Cg

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Originally Posted by shattered
Originally Posted by shattered
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.


Manual + schematics = working double-size chars and smooth scroll:

[Linked Image]

Cyrillic glyphs aren't very polished, though, compared with vt240-clone (mc7105).



When firmware thinks there is a graphics card, a Tek 4010 mode menu suddenly appears:

[Linked Image]

Graphic card is rather simple -- basically a "glass plotter" (no upd7220 there, it's all discrete chips).

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Originally Posted by shattered
Originally Posted by R. Belmont
Heh. 48K Apple II games could pretty much be mechanically ported to anything with a 6502 and an agreeable memory map.


Here's another find (from http://agatcomp.ru/Pravetz/SuperGames.shtml) -- apple2-based arcade board (fits inside the CRT case) with Mario translation patch

Not in MAME (yet :))

[Linked Image]


I've took a stab at it but failed. If starting address is 0 (i.e. this dump is mapped at $C000 so that start address is read from $3FFC), then code makes some sense, but treats memory at $00xx as RAM, then accesses unknown slot devices and finally jumps into unknown (no matter what I add to $4000 it doesn't look like useful code):
Code
                  * = 0000
0000   E4 FF      CPX $FF
0002   A9 AD      LDA #$AD
0004   85 00      STA $00
0006   A9 E8      LDA #$E8
0008   85 01      STA $01
000A   85 05      STA $05
000C   A9 95      LDA #$95
000E   85 03      STA $03
0010   A9 00      LDA #$00
0012   85 04      STA $04
0014   A9 C0      LDA #$C0
0016   85 02      STA $02
0018   A9 D0      LDA #$D0
001A   85 06      STA $06
001C   A2 07      LDX #$07
001E   F8         SED
001F   D8         CLD
0020   2C 50 C0   BIT $C050
0023   A2 01      LDX #$01
0025   8E A0 C0   STX $C0A0
0028   AD E0 C0   LDA $C0E0
002B   8D 00 12   STA $1200
002E   E6 15      INC $15
0030   D0 F6      BNE $0028
0032   E6 16      INC $16
0034   E8         INX
0035   E0 70      CPX #$70
0037   90 EC      BCC $0025
0039   4C 00 40   JMP $4000

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Yeah, it's substantially altered from the plain Apple II Mario, at least in terms of the startup code.

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Originally Posted by shattered
When firmware thinks there is a graphics card, a Tek 4010 mode menu suddenly appears:

[Linked Image]

Graphic card is rather simple -- basically a "glass plotter" (no upd7220 there, it's all discrete chips).


... and it seems to work (haven't understood it fully yet, so there are stray pixels):

[Linked Image]

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Some progress on http://mametesters.org/view.php?id=5764 "radio4k: Display is not stable and flickers". This ROM uses SCC_END_OF_ROW_DMA chars, regular radio86 does not:

[Linked Image]

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A different kind of progress -- digging in the "Ershov archive" (credit for this find goes to avivanov76) produced a 1982 document re: Apple II hardware purchase for Soviet Academy of Sciences: http://ershov-arc.iis.nsk.su/archive/eaindex.asp?did=7448&lang=2

It's not all just for work, btw -- Apple Stellar Invaders, Apple Trek/Star Wars, Apple Bowl, Sargon II, Checkers are on the wish list smile

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That's a seriously loaded II Plus: Disk II, the (now ultra-rare) Integer ROM card *and* a standard RAM language card, a Centronics board, a Thunderclock, a PROM burner board, a prototyping card, a Programmer's Aid #1 ROM, and a Monitor II.

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Not hardware at all this time -- creative interpretation of La Marseillaise, Warszawianka and Soviet Union's hymn in the form of tracker module (dated 1991).

https://www.youtube.com/watch?v=QEz7IksoQm0

(Scream Tracker 2.2 running in ct486 with Covox output)

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Originally Posted by shattered
It's supposed to look like this:

[Linked Image]

Not sure yet if emulation of ms7004 is inaccurate, or there was a different firmware for it.


Changing "out ^= ~mem;" to "out ^= mem;" in vram_w fixes video error:

[Linked Image]

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