Hi...
I've seen a few items saying that a couple of HP 98XX desktops used nonproprietary CPUs - specifically, something in the 6800 series.
Anyone know if this is true?
Thanks!
Bill Wiese
San Jose
Which HP98xx desktops used std non-HP CPU??
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12-07-2004, 12:14 PM
Hi... I've seen a few items saying that a couple of HP 98XX desktops used nonproprietary CPUs - specifically, something in the 6800 series. Anyone know if this is true? Thanks!
Bill Wiese
12-07-2004, 12:28 PM
The HP9815A/S used a Motorola 6800 microprocessor along with a 6800-family peripheral chip (I think it was a 6820 but I can't be certain without looking), standard RAM, etc. The other machines featured on the Museum website (9810/20/30 and 9825) all used HP proprietary CPUs. The later 9826/9836 machines use a Motorola 68000-family microprocessor. I hope this helps,
Alex K. http://www.calcmuseum.com
12-07-2004, 03:12 PM
Yes, the 9815 uses a Motorola 6800. I thought the other 40 pin chip was a 6821, but that's very similar to a 6820 anyway. The 9810/20/30 use 4 boards of mostly TTL chips with some small PROMs to make a bit-serial 16 bit processor. The 9825, etc have an HP multi-chip module with a large heatsink on top.
12-08-2004, 01:58 PM
Thank you Alex!
Bill Wiese |
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