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Code Issues Releases Wiki Activity

Comments to kernel files by Phil.

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This commit is contained in:
Warren Toomey 2016-03-09 06:45:44 +10:00
parent 286acea85b
commit c65a5587fb
3 changed files with 11 additions and 8 deletions
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10
src/sys/s1.s
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@ -86,7 +86,7 @@ swap: 0
jms lookfor; 1 " in/ready
skp
jmp 1b " loop until a process becomes ready
dzm maxquant " here with in/ready (self?)
dzm maxquant " in/ready (self?): come back next tick!
jmp 3f
1: " here with out/ready process
dac 9f+t " save process pointer (swapped out) in t0
@ -97,7 +97,7 @@ swap: 0
jmp 2f
1:
lac swap
dac u.swapret " return to scheduler when swapped back
dac u.swapret " return to caller when swapped back
iof
lac o200000 " change status to swapped out
tad u.ulistp i
@ -105,13 +105,13 @@ swap: 0
ion
jms dskswap; 07000 " swap process out
lac u.dspbuf
sna
jmp 2f
sna " process using display??
jmp 2f " no
law dspbuf
jms movdsp
2:
iof " disable interrupts
lac o600000 " change status (1->7?)
lac o600000 " change status (1->7?????)
tad 9f+t i
dac 9f+t i
ion " enable interrupts

2
src/sys/s2.s
View File

@ -284,7 +284,7 @@ open1: " common exit for open/creat
jmp 1f " no
iof " yes: disable interrupts
lac ii " get i number
tad swr " get read routine table addr
tad swr " add to base instruction
dac .+1
jmp .. i " dispatch to read routine
1:

7
src/sys/s8.s
View File

@ -175,8 +175,11 @@ sysdata: " system data 64 words saved to disk
" 4: out/notready??
" bits 3:17 -- disk swap address/8
" second word: process pid
" third word: used for smes/rmes
" fourth word: ??
" third word: smes/rmes status:
" 0: not waiting
" -1: this process waiting (rmes)
" other: complement of sender pid
" fourth word: smes message
ulist:
0131000;1;0;0
0031040;0;0;0