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MAME
09/23/18 12:41 AM
I know Kevtris can dump hd6301V0 and hd6301V1 chips, at least. It involves a built in test mode which retrieves the reset vector from external rom space, which can be used to dump the internal rom, if I recall correctly.

LN
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MAME
09/22/18 06:45 PM
It's keytronics foam and foil. You are going to have to replace all the pads
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MAME
09/22/18 02:46 PM
I got a battered keyboard for my Apricot Xi ... the display with the "soft keys" worked at first but is flakey, and the main keyboard area seems to be dead.

[Linked Image]

[Linked Image]

The keyboard MCU is marked HD6301V1C19P ... anyone capable of dumping these? They're supposed to have a 4K ROM.

[Linked Image]
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MAME
09/20/18 09:15 PM
It's not really related, though.
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MAME
09/20/18 07:36 PM
Originally Posted by Just Desserts
Why are you suddenly so obsessed with this issue that you're cross-posting about it on multiple forums, and dragging someone else's thread off-topic about it, no less?


Sorry Just, it was not my intention, but since I thought the subject of this post was related to the issue, I thought I could find some answers about it here. And because nobody answered my post on MAME Chat forum.

Pit-Fighter is my favorite game and I want it "perfectly" emulated, if possible. And since I play this game a lot, It kinda bothers me. That's why I'm looking for clues over this bug. That's it.
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MAME
09/20/18 04:27 PM
Why are you suddenly so obsessed with this issue that you're cross-posting about it on multiple forums, and dragging someone else's thread off-topic about it, no less?
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MAME
09/20/18 03:54 PM
Originally Posted by R. Belmont
No, it's a flaw in the scaling algorithm.


Thank you for the reply RB. Do you know if this flaw is present in the real PCB too or this flawed algorithm is on MAME side only (emulation bug)?

I wonder if there's an active MAME developer who could get rid of this glitch or if Aaron was the only guy with enough Atari knowledge to do such thing...
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MAME
09/20/18 01:39 PM
No, it's a flaw in the scaling algorithm.
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MAME
09/20/18 12:06 PM
Originally Posted by R. Belmont
It only works for games where the graphics are stored and drawn as tiles, and where the driver uses MAME's centralized routines to handle them. A lot of games either don't use tiles at all (Mortal Kombat) or use them in a more complex manner than the central routines can reasonably deal with (Saturn).


Could it be the reason behind those vertical gaps that appear on the backgrounds in Pit-Fighter when the camera is zooming in/out? Pit-Fighter is heavily based on tiled graphics and maybe the driver is not rendering those tiles properly. Just a guess here...
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MAME
09/19/18 11:52 PM
It only works for games where the graphics are stored and drawn as tiles, and where the driver uses MAME's centralized routines to handle them. A lot of games either don't use tiles at all (Mortal Kombat) or use them in a more complex manner than the central routines can reasonably deal with (Saturn).
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MAME
09/19/18 10:51 PM
Hi there, thanks for helping me out with the Professor-Pacman thing.

Now I've got a question that has been bothering me ever since I first started using MAME. Pressing F4 will load up the graphics data for like the palettes, background tiles, foreground objects & characters right? Some games support it, others don't.

And why is that?

Is it how certain games are dumped, or are those things coded by people and it's possible to write some for games that don't have it?
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MAME
09/17/18 11:47 PM
Considering the fact that the real hardware can boot into the OS without channel cards tells me that disabling any channel card emulation should help with debugging the boot issue. If the emulation continues to crash without any channel cards "connected", then that would determine that the issue is not with the channel cards but rather the main CPUs. Anyone willing to test this out?
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MAME
09/17/18 07:52 PM
I found an OS/2 v3 CD and it installs fine in recent MAME, but doesn't seem to like any of SVGA devices -- clgd542x, svga_et4k are not detected by the OS driver, gfxultra is detected but startup hangs sometime after loading Ring 0 driver, &c

(A list of drivers bundled with v3 -- http://www.elhvb.com/mobokive/eprm/eprmx/12218.htm)

Sound Blaster 16 does work but playback stutters.

Hence the plain vanilla screenshot:

[Linked Image]
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MAME
09/16/18 09:55 PM
Cool stuff. I'm more familiar with the later UltraSPARC machines, but It's always great to see progress in emulation of old workstations/servers.
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MAME
09/16/18 06:10 PM
Okay, last screenshot for now, I promise: Let's do some C90 development with MAME!

[Linked Image]
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MAME
09/16/18 06:01 PM
No, here is what it looks like on a cg6. Ship it! wink

[Linked Image]
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MAME
09/16/18 05:48 PM
here is what it looks like on a cg6

[Linked Image]
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MAME
09/16/18 05:22 PM
The bwtwo graphics adapter looks a bit less gaudy:

[Linked Image]
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MAME
09/16/18 05:01 PM
Disco.

[Linked Image]
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MAME
09/16/18 04:51 PM
Even better! It turns out you must not have overlapping partitions when going to install. Who would have thought?

[Linked Image]
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MAME
09/16/18 02:48 PM
Oh HO!

[Linked Image]
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