jnc at mercury.lcs.mit.edu
Wed May 30 12:48:26 CDT 2018
> From: Henk Gooijen
> My findings so far :
> Comments are very welcome!
I got a:
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> I vaguely remember that there was a difference in the front console For
> the BA11-K and the BA11-F configuration. ... the two ribbon cables from
> the front panel are at the right side for a BA11-K box, and on the left
> side for the BA11-F box. Given the location of the CPU boards in both
> boxes, that makes sense.
They didn't do two different console PCBs, did they? It must be just cabling
routing? I couldn't find any manual/drawings for the BA11-K version, so I
can't tell for sure..
> From: Jon Elson
> I'd get an FPGA development board and download Xilinx's webpack
> software. It would not take real long to design the basic microcode
> engine, and then you could develop some application microcode in
> parallel with the hardware
That approach worked really well for Dave B and I on the QSIC. IIRC, we
bounced around the uengine design concepts for a couple of days, and then
once we decided to go, he had the hardware working in a day or so. It's in
Verilog, so perfect for an FPGA devel board; I think it's in his Github
If you go this route, I have that config-file driven uassembler written in
portable C (compiles on 3 different systems that I know of) which uses only
standard I/O library which you can use for the ucode; it should handle most
any uengine design, unless it has something really wierd.
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