Bill,
Feel free to ask lots of questions here about the LGP-30. Unfortunately,
I don't have a lot of answers. I wrote it almost ten years ago, more to
work out the timing of a disk/drum memory system than anything else. As
the matrix at the end of one of the SimH documents show, it never
received anything more than hand tests.
systemLGP-30 1130780
device
CPUhyy
FPU--y
CIS--y
consolehyy
paper tapeh--
card reader-yy
line printer-yy
clock--y
extra terminal--y
hard disk-yy
fixed disk---
floppy disk--y
drum---
DECtape---
mag tape--y
legend:y = runs operating system or sample program
d = runs diagnostics
h = runs hand-generated test cases
n = untested
- = not applicable
There is a binary loader. According to the sources, the LOAD command
does this:
/* Binary loader - implements a restricted form of subroutine 10.4
Switches:
-t, input file is transposed Flex
-n, no checksums on v commands (10.0 compatible)
default is ASCII encoded Flex
Commands (in bits 0-3):
(blank) instruction
+ command (not supported)
; start fill
/ set modifier
. stop and transfer
, hex words
v hex fill (checksummed unless -n)
8 negative instruction
*/
I am not sure how much of the LGP-30 was checked out, either with
diagnostics or available software tapes; it's been a long time. I have
no saved test programs.
/Bob
_______________________________________________
Simh mailing list
[email protected]
http://mailman.trailing-edge.com/mailman/listinfo/simh
