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Neon816: VIDSTART, VIDSTOP, DUMPEDID

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mgcaret 2019-12-15 12:36:36 -08:00
parent c3fa779702
commit 3ad1f1e18b
1 changed files with 95 additions and 0 deletions
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platforms/Neon816/platform-lib.s
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@ -258,6 +258,101 @@ dword VDC_STORE,"VDC!"
NEXT
eword
dword VIDSTART,"VIDSTART"
ENTER
ONLIT $0799
ONLIT $10
.dword VDC_STORE
ONLIT $0839
ONLIT $12
.dword VDC_STORE
ONLIT $03C7
ONLIT $14
.dword VDC_STORE
ONLIT $041E
ONLIT $16
.dword VDC_STORE
ONLIT $0257
ONLIT $18
.dword VDC_STORE
ONLIT $0258
ONLIT $1A
.dword VDC_STORE
ONLIT $025C
ONLIT $1C
.dword VDC_STORE
ONLIT $0272
ONLIT $1E
.dword VDC_STORE
ONLIT $92
: .dword ZERO
.dword VDC_C_STORE
.dword ZERO
.dword VDC_C_FETCH
.dword IF
.dword :- ; branch if false
.dword I2C2START
ONLIT $70
.dword I2C2_STORE
ONLIT $08
.dword I2C2_STORE
ONLIT $B9
.dword I2C2_STORE
.dword I2C2STOP
EXIT
eword
dword VIDSTOP,"VIDSTOP"
ENTER
.dword I2C2START
ONLIT $70
.dword I2C2_STORE
ONLIT $08
.dword I2C2_STORE
ONLIT $FE
.dword I2C2_STORE
.dword I2C2STOP
.dword ZERO
.dword ZERO
.dword VDC_C_STORE
EXIT
eword
dword DUMPEDID,"DUMPEDID"
dump_size = $0100
ENTER
ONLIT dump_size
.dword ALLOC ; buffer for downloaded EDID data
.dword I2C2START
ONLIT $A0
.dword I2C2_STORE
.dword ZERO
.dword I2C2_STORE
.dword I2C2START
ONLIT $A1
.dword I2C2_STORE
ONLIT dump_size
.dword ZERO
.dword _DO
: .dword I2C2_FETCH_ACK
.dword OVER
.dword IX
.dword PLUS
.dword CSTORE
.dword ONE
.dword _PLOOP
.dword :-
.dword UNLOOP
.dword I2C2_FETCH ; NeonFORTH displays this
.dword I2C2STOP
.dword DUP
ONLIT dump_size
.dword DUMP
ONLIT dump_size
.dword FREE
EXIT
eword
dend
; and now for the system interface