IBM 360/30 in verilog

Jon Elson elson at
Tue Jul 12 11:16:33 CDT 2016

On 07/12/2016 12:34 AM, Camiel Vanderhoeven wrote:
> Most weren't sold, but leased. The ALDs would be used by 
> the IBM CE, not the customers themselves. I don't know if 
> machines that were sold rather than leased came with ALDs 
> or if IBM kept these, I suspect the latter to be the case. 
Absolutely, the ALDs went with the machines, whether sold or 
leased.  The ALDs contained machine specific info for the 
emulators loaded into it, as well as all ECOs applied at the 
factory and in the field.  So, you could have 2 identical 
models at an installation, and there would be TWO ALD carts, 
with serial numbers on them, so they knew which one applied 
to which box.


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