Mac SE SuperMac SuperView!

[Snial]

My Mac SE originally had a second portrait, A4 page monitor. I had been used by the Eastern Daily Press (a Norwich, UK local newspaper) in the 1980s early 90s. It was always very weird to see the second monitor in action, because obviously it's fantastic to have a second monitor for such an early Mac, but it'd get updated at glacial speeds compared with the video performance for late 90s computers. I took the card out when the flyback on the SE blew. Is it any potential use, given that I presume it's hard to get a compatible monitor?

 

[Phipli]

My Mac SE originally had a second portrait, A4 page monitor. I had been used by the Eastern Daily Press (a Norwich, UK local newspaper) in the 1980s early 90s. It was always very weird to see the second monitor in action, because obviously it's fantastic to have a second monitor for such an early Mac, but it'd get updated at glacial speeds compared with the video performance for late 90s computers. I took the card out when the flyback on the SE blew. Is it any potential use, given that I presume it's hard to get a compatible monitor?

View attachment 62777

Is it missing its EEPROM?

First question is whether it outputs 0.7v, 5v or ECL. Progressing in levels of faff to get working.

 

[Snial]

Is it missing its EEPROM?

First question is whether it outputs 0.7v, 5v or ECL. Progressing in levels of faff to get working.

I don't believe so, it did actually work - I used it with the monitor (don't know what happened to the monitor).

 

[Arbee]

Huh. It looks like it shouldn't work, because the two EPROM sockets in the lower right are empty. (The socket between those and the TMS34061 is suspect too).

 

[Phipli]

Huh. It looks like it shouldn't work, because the two EPROM sockets in the lower right are empty. (The socket between those and the TMS34061 is suspect too).

Sometimes you see cards where the software all runs from disk even though there is a ROM socket. Its weird, but not the first time I've seen it. Someone changed their mind or something went wrong.

I don't think SEs use Slot Manager anyway, so it sort of doesn't matter.

 

[Arbee]

Yeah, true. I know the Radius TPD card has an EPROM and uses the "have $55AAAA55 $55AAAA55 at $F80000 and you'll get called before the startup beep" mechanism so you don't need software, but it's possible to do it other ways.

 

[zefrenchtoon]

Is it missing its EEPROM?

First question is whether it outputs 0.7v, 5v or ECL. Progressing in levels of faff to get working.

Huh. It looks like it shouldn't work, because the two EPROM sockets in the lower right are empty. (The socket between those and the TMS34061 is suspect too).

Mine is identical. Same missing chips as you can see in the attached picture.

 

[oldappleguy]

It may just drive a ttl monator

 

[zefrenchtoon]

After looking at @oldappleguy 's photos, I relooked at my card and @Snial 's one.
They're not the same on the left part !

if anyone has an idea of why these differences ...

Thanks @oldappleguy for your scans !

 

[Snial]

Hi folks,

Just catching up on an old thread.

I don't think SEs use Slot Manager anyway, so it sort of doesn't matter.

This makes sense. I thought the TMS34061 was a DSP, but in fact it's just a display controller.

if anyone has an idea of why these differences ...

I have a theory. Mine has a 55MHz and 36MHz Oscillator, yours only has a 55MHz one. I thought the 55MHz oscillator divided down to the CPU frequency of 7.5MHz or so, but it doesn't. It divides down to 6.875. But the 36MHz one doesn't divide down well either (36/4=9 MHz, 36/5=7.2MHz).

Maybe they're designed to support slightly different monitor specs. I'm pretty sure mine was an A4 portrait monitor and I don't think it had a menu bar. Let's try a bit of math. 210mm at a notional 72 dpi is 595.27 pixels x 841.8 pixels (because the long side of an A-series paper is √2*the short side). 596*842=501,832 which is 62,729 bytes. That makes sense, I think there's 64kB of 120ns RAM on board. So, it could really support up to maybe 608 pixels x 862 pixels.

Also, I suspect a GDevice for multiple monitors only appeared with Color QuickDraw; so multiple monitors here must be done by hi-jacking the ToolBox.

Here's a thought. Were there any USB 1.1 to VGA adapters that worked with a Mac? If so, it could have been possible to add a second monitor to an iBook/300. It was certainly possible to do things the other way around, Dazzle was a Composite to USB 1.1 capture card.