IBM 360/30 in verilog

Jon Elson elson at
Mon Jul 11 21:31:42 CDT 2016

On 07/11/2016 07:35 PM, Curious Marc wrote:
> Thanks for the detailed answer. I see the front panels look remarkably similar though. Short of redoing a 360/50 on an FPGA (I'd need to retire to have enough time for this one!), could I use the /50 panel with the /65 emulator?
Not really!  The 360/50 had 4 "rollers" for 4 rows of 
lights, and one row of data switches, and 2 rows of 
dedicated lights.

The 360/65 had 6 rollers with 6 rows of lights, plus TWO 
rows of data switches, and pretty much no dedicated lights 
other than associated with the rollers.

Both had a row of address switches under the data switches.

So, yes, in GENERAL, they had a similar look and layout, but 
in detail, there was a lot different, some of it 
specifically related to the memory word width.

The only machine that looked really different was the 
360/30, that had a panel more reminiscent of the 1401.
And, of course, the 360/85, which was really a prototype of 
the 370/165.  As far as software was concerned, it was just 
a really fast 360, but the hardware was MUCH more advanced.


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