Hacking a Roland CAMM3 PNC-3000

[audryhome]

Hi Robin,

I have an old PNC3000 at home, used it few years ago but EPROMS seem to be dead now (25 years old...).
I understand you have reprogrammed yours, and I would like to give another life to my machine.
Do you know where I can find the original EPROM content?

On the longer run, I would like to replace all this venerable electronics with a Raspberry PI + some kind of controller board (the one used on 3D printers or a custom designed one, linux enabled if possible). Do you know about such initiatives?

Many thanks for your help

Kind Regards

Jean

[cosmonat]

Hi Jean,

Are you looking into selling the machine? I would be interested in buying it.

Regards,
Alex

[Snowy]

Is there any more information on this?

I've just bought one and was reading through and then it stopped.............

Would love to hear more

Snowy

[Robin Hewitt]

I can run the motors so X,Y and Z all arrive at their target simultaneously, I can read all the buttons and quadrature encoders, I can light the lights and stuff. I can read a sequence of positions and speeds from a serial host then execute them as a tool path.Whether that is of any use to you rather depends on whether this next bit looks like something you could understand...

;
;***********************************************
;
; Home: Go to the limit switches then return
;
;***********************************************
;
Home:
ld hl,0 ; zero coords so we get the return offset
ld (Xcoord),hl
ld (Ycoord),hl
ld (Zcoord),hl
;
ld a,4 ; Set the sequence so it starts
ld (hseq),a ; with a lift
ld hl,NmiHome ; Tune in to the Home service
ld (NMI),hl
;
call NotIdleLoop; ; returns when stepping is complete
;
ld hl,0 ; We started from zero so the position
ld de,(Xcoord) ; counters will have the distance moved
and a ; To get a return co-ordinate we need
sbc hl,de ; to reverse the counts.
ld (mX),hl ; subtract the position from zero
;
ld hl,0 ; repeat for Y
ld de,(Ycoord)
and a
sbc hl,de

[Doddy]

Eh?, that looks like Z80 (if I can remember 40 years ago)

[Robin Hewitt]

Eh?, that looks like Z80 (if I can remember 40 years ago)

It has a 4MHz Z80A with a counter timer chip hanging off the NMI pin, a little feature that keeps you on your toes

[Zorbit]

Removed.