Pioneers of computing

[ben]

On 3/11/2019 10:29 AM, Jon Elson wrote:
> On 03/11/2019 02:35 AM, ben via cctalk wrote:
>> IBM 360 32 bits 16 word reg file - 16 bit word.
>>
>>
> While some 360 models had a hardware architecture of 8, 16, or even 64 
> bits, all of the 360s (except the model 20, which was not really a 360) 
> had 16 32-bit registers as the program saw it.
> 
> Jon
>   That needed to say Half Word. The point I was making was you went down
from 36 bits to 32 bits and that loss of word size made everything
follow a similar architecture model between different computer 
manufactures as there is only a few ways to format your opcodes to fit 
into half a word. A bit here, a bit there and WOW you need a bigger
opcode space. Ben.