On 06/18/2015 06:01 PM, Fulko Hew wrote:
On Thu, Jun 18, 2015 at 7:45 PM, Rick Stevens <ricks@xxxxxxxxxxxxxx> wrote:
Bus termination wasn't mandatory, but it sure as hell helped. Some
company (can't remember who) developed an active terminator board that
was much better than just passive resistors,
I don't have silk screening on mine, but I'm pretty sure it was Processor Tech
that made it. I bypassed the 4 slot and went straight to that backplane,
and its 16 slots. It was the IMSAI that put in a 22 slot backplane.
Yeah, it could have been PT. I was thinking them, Cromemco or TDL
(Technical Design Labs, who also made the Z80 processor board).
Yes, IMSAI had the 22-slot single-piece motherboard and IIRC an 18A 8V
power supply (more like 10V) and a front panel with the bit switches
laid out in hex rather than the octal used on the Altair (although I
think the Altair was prettier). When I built my three Altairs, the
single-piece motherboard wasn't available.
PS. Thanks for making me look at mine. My machine was warm!
Turns out my add-on 8V supply has been on for the last couple of months
and I didn't even know it.
Heheheheh! Well, it was a nice trip down memory lane. Now I gotta go
dig through my various Amiga stuff (I had at least one of every Amiga
made) and see what's still there.
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- Rick Stevens, Systems Engineer, AllDigital ricks@xxxxxxxxxxxxxx -
- AIM/Skype: therps2 ICQ: 226437340 Yahoo: origrps2 -
- -
- Brain: The organ with which we think that we think. -
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