IBM 360/30 in verilog

Curious Marc curiousmarc3 at
Tue Jul 12 02:58:08 CDT 2016

Darn. My hopes are shattered. Lots of Verilog in my future, that is if we can find 360/50 ALDs...

> On Jul 12, 2016, at 11:31 AM, Jon Elson <elson at> wrote:
>> 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.
> Jon

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