Advertisement
PAPER TAPE LOADER
The IMSAI Paper Tape Loader is a program that will load tapes
in the standard object format
tape reader on an ASR33 teletype.
If the paper tape loader is ' read in with the bootstrap loader
(see Bootstrap Loader section), it will start itself up and
print an "*" on the teletype.
started at its beginning address.
When the loader prints an
to be loaded in the paper tape reader on the teletype.
strike any key on the teletype.
start automatically.' While the tape is being read in, the data
being loaded will be displayed in the PROGRAMMED OUTPUT lights.
The loader will stop the reader and print an
conditions:
1.
If the PROGRAMMED OUTPUT displays 00 (all lights o f f ) , the
loader has encountered an End-of-File record, an the pro
gram has been successfully loaded.
tape may be loaded by placing it in the paper tape reader
and striking a key on- the teletype.
2.
If something other than 00 is displayed in the PROGRAMMED
OUTPUT lights, a bad record has-been encountered in the
tape.
The record may be re-read as follows: .
o
Move the switch on the reader to the "FREE" position
o
Back the tape up about two feet
o
Put the switch back in the "STOP" position
o
Strike a key on the teletype
If the loader stops again on the same record, inspect the
tape for tears or distorted holes
fixed with cellophane tape).
IMSAI 8080
Paper Tape Loader
(see appendix)
from the paper
Otherwise, it should be manually
on the teletype, mount the tape
The paper tape reader should
At this point, another
(these may usually be
Then,
under two
PGM-4A
12 - 59
Advertisement
