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I checked the v1.2 and v1.3 ROM files and they are both OK. I also updated the above post with the ROM .zip file with the verification info. So, I will find/fix my disassembly error. Maybe just an offset problem Update: Yes - I was forgetting that offsets are relative to the start of each...

I received my 27C256s, so I will try the 1.3 ROM tonight. I did some manual disassembly on it and the declaration ROM doesn't seem right to me, but I will burn it and see. I have started to refresh my memory from SlotEqu.a, ROMEqu.a and Designing Cards and Drivers, and it didn't look like the...

Here are 2 of the manuals, plus the 1.0b tools CD from 1991 (for A/UX 2.0). I just opened a shrink-wrapped disk that is 30 years old! :D I was able to extract the A/UX Developer Tools 1.0b1 CD .iso via Nero on Windows. It mounts under SheepShaver as a .toast, albeit without desktop comments...

Some progress -- I got an external CD-ROM drive to rip the disk .iso. Also, since my original post, I have been thinking about old video boards and Spectrum/24 Series III v1.1 should work well under A/UX. In addition, Spectrum/24 PDQ should also work. And, given the changes that went into...

My Spec/8 III board is v1.2, so when I get the replacement ROM, I will compare the ROM against the enclosed file to make sure it matches for the sake of completenesws. But...much better to use v1.3 for the Spectrum/8 Series III anyway. I have mentioned SuperMac's VDI implementation in other...

That's it! I created a new .zip file with renamed ROMs, bitwise inverted files and a text file with the part numbers (in case anyone really cares what the part numbers were). Zip File Contents: Spectrum8SeriesIII-v1.2-ROM.bin Spectrum8SeriesIII-v1.3-ROM.bin S83-v1.2-Inverted.txt...

I found those - didn't see any indication of a clear version number...and those are the same files that are included in other archives. I have to de-invert them to check the versions.

I am looking for an image of the Spectrum/8 Series III v1.3 ROM. Does anyone happen to have a board with this ROM version or know where one can be found? I have looked online, but have not had any success. Version 1.3 added support for additional SuperMac, Miro and Apple monitors -- 16", 17"...

SimplyTV (1994) is just TV out at different resolutions AFAIK, maybe with virtual desktops, etc. -- and from SuperMac's post-merger days. It comes from the multimedia cross-over era when people were (more commonly) starting to use their computers to show content on TVs (and covered a number of...

I don't know -- anything past 1992ish is out of my area. ;)

Yes...I will be showing scope timing and, of course, updating the spreadsheet with new values for SuperVideo vs. the ones that are there now.

I am going to look at the signal on a scope, see what the card is generating based on calculated timing to look for issues/errors/deviations, and see if it is possible to adjust the signal using the expected clock frequencies. The calculations should be correct, but obviously aren't since there...

Yes - if you know the resolution, the dot clock and the front porch, back porch and sync values, you can calculate everything (which you will note are the blue input boxes in the VideoHelper 2.0 spreadsheet attached above). Similarly, you can calculate one of the following missing values if you...

Changing the oscillator to a different or higher frequency is cart before the horse. I don't yet know why the timing with the exact/expected SVGA clocks isn't working. If it is not possible to manipulate the timing with the expected clocks, then looking for alternate frequencies to shift the...

Thanks for thumbnailing! :) I appreciate it. Also - love the enthusiasm! On the timing, it's not really working yet. I can get a Dell monitor to sync at 800x600, but it's more lucky than right. I am hoping to make the 2 SVGA modes work at the stock oscillator frequencies. SuperVideo does not...

He looks a little tired in that picture and isn't dancing very much. Are you sure he's getting 5V?

As you can see from the VideoHelper2.0 spreadsheet in my post above, the standard VESA SVGA timing values for 800x600 are well-known, easy to calculate, and should be correct. If you wouldn't mind, could you please remove the image in your post or convert it to a thumbnail? It does not appear to...

Just use the original. Oscillators are not rectangular boxes. ;)

I don't think Oscar ever realized he would be such a famous dancer when he did his first Megahertz Mambo at Madame Mac's Dot Clock Dance Academy. They grow up so fast. :cry:

Here is VideoHelper 1.0 from 1988 with information about programming early SuperMac cards. It went to power users who wanted to use custom configurations. Amazing that it still exists! It's certainly not perfect, but has a lot of interesting information.