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mirror of https://github.com/DoctorWkt/pdp7-unix.git synced 2026-01-13 15:27:39 +00:00
This commit is contained in:
Phil Budne 2016-03-01 12:37:35 -05:00
parent 5bda1307c9
commit 6e38dad003

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@ -225,7 +225,7 @@ bits:
sza = 0740200 " OPR: skip on zero AC
snl = 0740400 " OPR: skip on non-zero link
skp = 0741000 " OPR: skip unconditionally
sna = 0741200 " OPR: skip on negative AC
sna = 0741200 " OPR: skip on non-zero AC
szl = 0741400 " OPR: skip on zero link
rtl = 0742010 " OPR: rotate two left
rtr = 0742020 " OPR: rotate two right
@ -240,8 +240,8 @@ With some limitations, OPR instructions can be OR-ed together.
order in the source!!):
sna cla " skip on negative AC, clear AC
sna spa " skip on negative or positive AC
sna ral " skip on negative AC, rotate AC left
sna spa " skip on non-zero or positive AC(??)
sna ral " skip on non-zero AC, rotate AC left
cla cll sza " skip on AC zero, clear AC, clear LINK
The last "operate" instruction is not microcoded: