On Sat, Mar 29, 2025 at 9:46 PM Jon Elson via cctalk
wrote:
> In the "old" days, such as the 1970's, pretty much any
> DEC-manufactured peripheral was supplied as a bunch of cards
> that plugged into a specific backplane section, generally 9
> slots, I think. A couple double-wide slots were for t
Have you looked at the Unibus troubleshooting guide? It used to be on
bitsavers.
On Sat, Mar 29, 2025 at 9:05 PM Ethan Dicks via cctalk <
cctalk@classiccmp.org> wrote:
> On Sat, Mar 29, 2025 at 9:46 PM Jon Elson via cctalk
> wrote:
> > In the "old" days, such as the 1970's, pretty much any
> > D
On 3/29/25 12:33, shad via cctalk wrote:
Hello,
I'm searching information about all existing variants of
DEC Unibus in Dual/Quad/Hex flavors.
I read the "UnibusSpec1979.pdf" on bitsavers, which
reports a "Standard Unibus" pinout in the last pages.
However in several backplanes "Small Periph
The why not use a UniBone comment has merit, what will your (FPGA)
implementation add ?
If you have additional capability in prospect, there remains the matter of
drivers
https://retrocmp.com/projects/qbone/326-qbone-unibone-alternative-bus-drivers
If you solve the (near) unobtanium OC driver
Hello,
I'm searching information about all existing variants of DEC Unibus in
Dual/Quad/Hex flavors.
I read the "UnibusSpec1979.pdf" on bitsavers, which reports a "Standard
Unibus" pinout in the last pages.
However in several backplanes "Small Peripheral Controller", "Modified
Unibus Device" an
> On Mar 29, 2025, at 12:33 PM, shad via cctalk
> wrote:
>
> Hello,
> I'm searching information about all existing variants of DEC Unibus in
> Dual/Quad/Hex flavors.
> I read the "UnibusSpec1979.pdf" on bitsavers, which reports a "Standard
> Unibus" pinout in the last pages.
> However i
Nice bits of info 😀
Sent from my iPhone
> On Mar 29, 2025, at 13:06, Milo Velimirović via cctalk
> wrote:
>
>
>
>> On Mar 29, 2025, at 12:33 PM, shad via cctalk
>> wrote:
>>
>> Hello,
>> I'm searching information about all existing variants of DEC Unibus in
>> Dual/Quad/Hex flavors.
> On Mar 29, 2025, at 4:06 PM, Milo Velimirović via cctalk
> wrote:
>
> ...
> The ability to use larger printed circuit boards; it gets you higher density
> and avoids the need to run (as many) interconnects off the board and thru the
> backplane. Remember that 50-60 years ago was the era o
