SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 182
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SPC8104
Manufacturer Part Number
SPC8104
Description
VGA LCD CONTROLLER
Manufacturer
S-MOS Systems
Datasheet
1.SPC8104.pdf
(306 pages)
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;**********************************************************************
;
;
;
;
;
;
;**********************************************************************
Step6:
DACloop:
NewDAC DB
Programming Notes and Examples
SP3-28
STEP6 - program the DAC.
mov
mov
out
xor
mov
out
mov
mov
mov
lodsb
out
loop
ret
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
S-MOS Systems, Inc. • Tel: (408) 922-0200 • Fax: (408) 922-0238 • http://www.smos.com
Although the palette is only 64 entries, we program the
full 256 VGA palette entries. All entries above 64 will
be ignored. This is done to demonstrate proper behaviour
of third party software that expects 256 palette entries
al, 0FFh
dx, 03c6h
dx, al
al,al
dx,3c8h
dx,al
dx,3C9h
cx,3 * 256
si,offset NewDAC ; SI -> new DAC data.
dx, al
DACloop
00h, 00h, 00h, 00h, 00h, 2ah, 00h, 2ah, 00h, 00h, 2ah, 2ah
2ah, 00h, 00h, 2ah, 00h, 2ah, 2ah, 2ah, 00h, 2ah, 2ah, 2ah
00h, 00h, 15h, 00h, 00h, 3fh, 00h, 2ah, 15h, 00h, 2ah, 3fh
2ah, 00h, 15h, 2ah, 00h, 3fh, 2ah, 2ah, 15h, 2ah, 2ah, 3fh
00h, 15h, 00h, 00h, 15h, 2ah, 00h, 3fh, 00h, 00h, 3fh, 2ah
2ah, 15h, 00h, 2ah, 15h, 2ah, 2ah, 3fh, 00h, 2ah, 3fh, 2ah
00h, 15h, 15h, 00h, 15h, 3fh, 00h, 3fh, 15h, 00h, 3fh, 3fh
2ah, 15h, 15h, 2ah, 15h, 3fh, 2ah, 3fh, 15h, 2ah, 3fh, 3fh
15h, 00h, 00h, 15h, 00h, 2ah, 15h, 2ah, 00h, 15h, 2ah, 2ah
3fh, 00h, 00h, 3fh, 00h, 2ah, 3fh, 2ah, 00h, 3fh, 2ah, 2ah
15h, 00h, 15h, 15h, 00h, 3fh, 15h, 2ah, 15h, 15h, 2ah, 3fh
3fh, 00h, 15h, 3fh, 00h, 3fh, 3fh, 2ah, 15h, 3fh, 2ah, 3fh
15h, 15h, 00h, 15h, 15h, 2ah, 15h, 3fh, 00h, 15h, 3fh, 2ah
3fh, 15h, 00h, 3fh, 15h, 2ah, 3fh, 3fh, 00h, 3fh, 3fh, 2ah
15h, 15h, 15h, 15h, 15h, 3fh, 15h, 3fh, 15h, 15h, 3fh, 3fh
3fh, 15h, 15h, 3fh, 15h, 3fh, 3fh, 3fh, 15h, 3fh, 3fh, 3fh
00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h
00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h
00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h
00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h
00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h
00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h, 00h
; Turn on PEL mask.
;
;
; Set data index to zero.
;
;
; Set DAC write index
; CX = # bytes (RGB * 256).
; Get the byte.
; Set the PEL data.
; Continue till CX == 0.
; End Step4
412-1.0
SPC8104
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