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Build Imlac secondary block loader from source code.

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BLKLDR 1 is from the IMLAC; IML DEVICE archive file dated 1976-11-02.
The archive was found in three identical copies on ToTS tapes 7006990,
701351, and 90606; they were extracted by Brad Parker.  The BLKLDR 1
timestamp inside the archive is 1975-01-26.  Tape database records
from DM show a BLKLDR 4 dated 1974-08-19.

To build the IMLAC; IMLAC BLKLDR file, it's first assembled with
MIDAS.  Regular IMTRAN writes the block loader format, but the block
loader itself is in the "special TTY" boostrap format.  IMTRAN is
runtime patched to skip the block framing.
This commit is contained in:
Lars Brinkhoff
2020-04-23 12:26:54 +02:00
parent a50bf2dde2
commit 3f46e646b8
5 changed files with 113 additions and 7 deletions
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doc/programs.md
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@@ -39,6 +39,7 @@
- BINPRT, display information about a binary executable file.
- BITPRT, print JCL as bits.
- BKG, a Backgammon game.
- BLKLDR, Imlac secondary block loader.
- BOLIO, typesetting.
- BOOTVT, GT40 boot ROM.
- BYE, say goodbye to user. Used in LOGOUT scripts.