Hi, and sorry for posting two threads in such a short time, the first one was just me not reading.
I've finally got hold of a GNT tape puncher/reader combo, and of course, it'd be nice to use it with my PDP-11/23.
I just can't figure out how to set it up with the absolute loader and all, here's my procedure:
I have been through the pdp-11 paper tape handbook, doesn't wisen me significantly, unfortunately.
1) Punch in boot loader via ODT:
I'm using SLU port 0 because I want to have a terminal at port 3 at the same time without a data switch.
2) 157744G in odt, ie. run from 157744
3) feed absolute loader into tape reader and read (DEC-11-L2PC-PO)
4) feed BASIC into tape reader and read (DEC-11-AJPB-PB)
and nothing more happens. the loader doesn't return to ODT either.
Have I messed up somewhere? Well, I have, but where?
All of these tapes are very early 70's, so are they exclusively for QBUS systems??
This is really the goal for me, with the 11/23, well one of them anyway.
Any info/hints/experiences would be GREATLY appreciated
Thanks in advance
I've finally got hold of a GNT tape puncher/reader combo, and of course, it'd be nice to use it with my PDP-11/23.
I just can't figure out how to set it up with the absolute loader and all, here's my procedure:
I have been through the pdp-11 paper tape handbook, doesn't wisen me significantly, unfortunately.
1) Punch in boot loader via ODT:
Code:
Loc. Cont. Label Instruction Comment
================================================
157744 016701 mov device,r1 get csr address
157746 000026
157750 012702 loop: mov #offset,r2 get offset
157752 000352 offset:
157754 005211 inc (r1) read frame
157756 105711 wait: tstb (r1) wait for ready
157760 100376 bpl wait
157762 116162 movb (r1),bnk(r2) store data
157764 000002
157766 157400
157770 005267 inc offset bump address
157772 177756
157774 000765 br loop
157776 177560 device: HSR csr, or 177560 for teletype2) 157744G in odt, ie. run from 157744
3) feed absolute loader into tape reader and read (DEC-11-L2PC-PO)
4) feed BASIC into tape reader and read (DEC-11-AJPB-PB)
and nothing more happens. the loader doesn't return to ODT either.
Have I messed up somewhere? Well, I have, but where?
All of these tapes are very early 70's, so are they exclusively for QBUS systems??
This is really the goal for me, with the 11/23, well one of them anyway.
Any info/hints/experiences would be GREATLY appreciated
Thanks in advance