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| SuperMac Spectrum can’t enable acceleration |
Posted by: Lycus on 2022-03-03 18:29:08
Hello, I just bought a Supermac Spectrum card, and I can’t figure out how to get acceleration enabled. It’s greyed out in the control panel, the card is powered by a TMS34061
It has a 1987 copyright date on it. 768KB RAM on the card.
Oddly enough the card says it is a Spectrum, no numbers. 1.9.1 ROM. |
Posted by: Unknown_K on 2022-03-03 18:55:10
Have a picture of the card and what the ROM revision is plus the OS you are using?
There are a few different revisions of the Spectrum brand. |
Posted by: Lycus on 2022-03-03 19:04:22
Have a picture of the card and what the ROM revision is plus the OS you are using?
There are a few different revisions of the Spectrum brand. The OS is 7.5.3, ROM 1.9.2
Card I can’t find a picture of anything like it besides mine. |
Posted by: Unknown_K on 2022-03-03 19:05:45
That card is old as dirt and pre accelerated video I would think. |
Posted by: Lycus on 2022-03-03 19:07:09
That card is old as dirt and pre accelerated video I would think. I would think that except for the fact that it has a TMS34061 on it, also was sold to me as accelerated.
I have a Radius 8 bit accelerated card somewhere but it has lines down the screen, I think it's got bad RAM, and it's ZIPP so that's extra fun. |
Posted by: Unknown_K on 2022-03-03 19:20:19
Did you install any earlier drivers? Before 2.7.5 the software had a separate control panel and Accelerator INIT and that would interfere with 2.7.5. |
Posted by: Lycus on 2022-03-03 19:24:31
Did you install any earlier drivers? Before 2.7.5 the software had a separate control panel and Accelerator INIT and that would interfere with 2.7.5. I did not. Only used 2.7.5
I pulled out my Radius card and it’s doing this
RAM issue? |
Posted by: Unknown_K on 2022-03-03 19:28:07
I think you needed a programmable DSP for acceleration on Nubus cards. |
Posted by: Unknown_K on 2022-03-03 19:28:48
I did not. Only used 2.7.5
I pulled out my Radius card and it’s doing this
RAM issue? Are the chips socketed? If not look for a cracked solder joint or maybe a broken off capacitor. |
Posted by: Lycus on 2022-03-03 19:30:14
Are the chips socketed? If not look for a cracked solder joint or maybe a broken off capacitor. No sockets, I’ve reflowed the card before and no fix |
Posted by: Bolle on 2022-03-03 19:31:19
That card is not accelerated. Only the later SuperMac cards that used ASICs supported acceleration.
The TMS34061 does not support any pixel operations, it’s just a „dumb“ framebuffer controller. |
Posted by: Lycus on 2022-03-03 19:32:05
That card is not accelerated. Only the later SuperMac cards that used ASICs supported acceleration.
The TMS34061 does not support any pixel operations, it’s just a „dumb“ framebuffer controller. Awesome. Thank you. I know the TMS34020 and stuff is actually a CPU so that’s why I got confused.
So I’ll have to fix my Radius |
Posted by: Bolle on 2022-03-03 19:36:10
TMS34020 Yep, that’s a totally different beast. I’ve got two Formac Nubus cards with one of those on them and they allow for QuickDraw acceleration.
Side fact: the hardware acceleration in Marathon only works with the specific video chipset in the LC/Performa 630 as far as I know. No other Mac and no Nubus card supported that. |
Posted by: Lycus on 2022-03-03 19:36:50
Yep, that’s a totally different beast. I’ve got two Formac Nubus cards with one of those on them and they allow for QuickDraw acceleration.
Side fact: the hardware acceleration in Marathon only works with the specific video chipset in the LC/Performa 630 as far as I know. No other Mac and no Nubus card supported that. I thought it was just 1.0 that was like that but 1.2 allowed QuickDraw |
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