12 Mar
2019
12 Mar
'19
5:59 p.m.
On 3/11/2019 10:29 AM, Jon Elson wrote:
On 03/11/2019 02:35 AM, ben via cctalk wrote:
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.
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