On Wed, Dec 4, 2024 at 10:15 PM Mike Katz <bitwiz(a)12bitsbest.com> wrote:
This reminded me of an instruction on the Power PC Micro Processor:
Enforce In-Order Execution of I/O with the assembler code of EIEIO
I considered this to be the Old McDonald of instructions.
Not an instruction, but the common I/O board in a PERQ2 is the EIO
(Ethernet and Input/Output). There was also OIO (Optional
Input/Output) which provided the 16 bit PERQlink parallel port and a
Canon laser printer interface. Ths led to
'Old McDonald had a PERQ
E-I-O-I-O'
-tony