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start of a paper tape bootstrap to read system from disk

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Phil Budne
2016-03-24 01:19:29 -04:00
parent 989bd7039e
commit c6f7a7799d
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" paper tape bootstrap: reads system from track 180
" (could read from any track 180-189 based on switches?)
" phil budne 3/24/2016
" must be output as a "rim" tape for SIMH to boot!!!
" load at normal (user) address of 010000
iof " interrupts off
caf " reset cpu
dscs " clear disk status
" code from maksys (altered to read instead of write):
-3072; dslw
cla; dslm
lac track; alss 8; xor o300000; dsld
lac o2000; dsls
dssf; jmp .-1
dsrs; spa; hlt
-1024; dslw
lac d3072; dslm
lac track; alss 8; xor o300110; dsld
lac o2000; dsls
dssf; jmp .-1
dsrs; spa; hlt
jmp 0100
o2000: 02000
d3072: 3072
o300000: 0300000
o300110: 0300110
track: 0 " get 0-9 from switches!!!