SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 261

• Manufacturer Part Number: SPC8106
• Description: LCD/CRT VGA CONTROLLER
• Manufacturer: S-MOS Systems

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Step1:
;;; if chip enabled at 46E8, use the following code instead:
;;;
;;;
;;;Step1:
;;;
;;;
;;;
;;;
;;;Enable46E8:
;;;
;;;
;;;
;;;
;;;
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Step2:
SPC8106
STEP1 - Before ANY ports can be accessed, the SPC8106FOC chip must be
STEP2 - Unlock Auxiliary Port.
Before programming the Auxiliary port for configuration,
it must be unlocked. Writing 1Ah to 3DEh index DEh and reading
it back will unlock the Auxiliary Port.
411-1.0
mov
mov
out
ret
mov
call
ret
DW
DW
DW
DW
DW
mov
mov
out
inc
in
ret
enabled.
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
dx,3C3h
al,1
dx,al
si, OFFSET Enable46E8
RunTable
PW+46E8h,16h
PW+0102h,01h
PW+46E8h,0Eh
PW+4AE8h,00h
-1
dx, 3DEh
ax, 1ADEh
dx, ax
dx
al, dx
; DX = port 3DEh.
; AX = index DEh, value 1Ah.
;
; Point to 3DFh.
; Do the read.
X12-AN-003-02
Programming Notes and Examples
SP3-35