rwengerter wrote:
The following current laser printers use the PMC-Sierra RM7965:
The HP Color LaserJet CM6049f MFP uses a 835 MHz RM7965
The Lexmark X736de uses a 900 MHz RM7965
See here: http://www.find-printers.com/comparison ... ark_x736de
If someone finds a cheap source for a Lexmark X736de mainboard then please post it in this forum. The RM7965 has a EJTAG interface which
manufacturers usually use to check a printed circuit board. This printer mainboard probably has reprogramable Flash chips which would help if
one wants to run self-written code.
If the EJTAG pins from this Lexmark printer board are known then it can be used as a Development board for the RM7965 - which is one step
to a custom RM7965 O2 CPU board.
The HP Color LaserJet CM6049f MFP uses a 835 MHz RM7965
The Lexmark X736de uses a 900 MHz RM7965
See here: http://www.find-printers.com/comparison ... ark_x736de
If someone finds a cheap source for a Lexmark X736de mainboard then please post it in this forum. The RM7965 has a EJTAG interface which
manufacturers usually use to check a printed circuit board. This printer mainboard probably has reprogramable Flash chips which would help if
one wants to run self-written code.
If the EJTAG pins from this Lexmark printer board are known then it can be used as a Development board for the RM7965 - which is one step
to a custom RM7965 O2 CPU board.
I'm still seeing notable differences between that chip and the RM7000. Some would be hardware, but some might also need IRIX or PROM tweaks (such as the BHT and a few register changes). I guess you won't know until you've tried it, but I wouldn't sink too much money into this.
SGI was the sole source as well, you don't know if they coded some variant of "IF RM7000 THEN L3cache exists"
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