Recent content by tokenalt

These 040 numbers are about what I'd expect for a machine of that era and are on par with other contemporary machines. However these 060 numbers are far below what I'd expect out of that CPU, the 060 should be getting into the upper 20s. There's definitely something weird going on here and I...

Maybe the reason Commodore was running out of money and dying is because they were selling below costs. Mac IIsi (Oct 1990 $3800) Sparcstation 1 (Apr 1989 $9000) Sparcstation IPC (Jul 1990 $4995)

I agree with you but I also think it goes back even further to the IIci. That machine is where Apple really proved they could make a solid graphical workstation at an affordable price.

It wasn't superior tech it was higher prices, the HP 320 had a starting price of $8510. The only thing that stopped Apple or Commodore from using those high end parts was the fact that no home user would pay those prices.

The 3/60, like most 68k workstations of the time, uses a custom MMU on the motherboard since apparently nobody liked the 68851. And I forgot to list it but AVEC is grounded. I've already done some limited testing with a normal 68030 and the machine seems to work fine, so when I have some free...

Looking over the 3/60 schematics I have found some differences. CDIS = pullup MMUDIS = pulldown CIOUT = NC CIIN = pullup CBREQ = NC CBACK = Vcc STERM = Vcc There maybe some more, the schematics are hard to read at times.

Unfortunately there are no schematics for the 3/80. A few years back someone was talking about sanding a board down to take photos of the traces but nothing came of it as far as I know. The 3/60 is a different story tho as we have full schematics and PAL equations for the board. I'll look into...

I know just didn't have time to get to it until now. Here are the voltages I got from the board. I don't know what qualifies as in use. A1 = 0 B1 = 1.68v B2 = 1.795v C1 = 1.696v C2 = 0 C3 = 5v D1 = 1.7v D2 = 1.691v D3 = 0 E1 = 19.66MHz E2 = 4v E13 = 0 F1 = 5v F2 = 5v F12 = 5v F13 = 5v G1 =...

I would be interested in this as it looks like it would fit the 3/80 much better. Lack of an FPU doesn't bother me as the 3/80 supports running the FPU at 40MHz which is good enough. I Just need to figure out how to get it to work on the machine.

Hello all, posting to report my success and failures with a booster. This may sound crazy but I got a booster a while back when I don't actually have an SE/30, I actually got it to try on a sun 3/60 and sun 3/80. First on the 3/80 the booster unfortunately does not fit directly, not surprising...