SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 249

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

TEXT SEGMENT WORD PUBLIC 'TEXT'
ASSUME CS:TEXT, DS:TEXT, SS:TEXT
Mode12PROC
;----------------------------------------------------------------------
;
;
;
;----------------------------------------------------------------------
Mode12ENDP
SPC8106
You should now be running as MODE 12 without BIOS support.
411-1.0
ORG
cld
mov
mov
mov
cli
mov
mov
sti
call
call
; at this point, all the registers are accessible, we need to
; program Auxiliary registers according to panel size, memory,
; and some preferences...
call
; at this point all registers are fully accessible, following
; is a standard VGA stuff, independent of CRT or panel type
call
call
call
call
mov
int
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
100h
ax, cs
ds, ax
es, ax
ss, ax
sp, 0FFFFh
Step1
Step2
Step3
Step4
Step5
Step6
Step7
ax, 4C00h
21h
; Set the direction flag.
; Ensure that DS and ES point to this segment.
;
;
; Interrupts off while changing the stack.
;
;
; Stack change done - restore interupts.
; Enable SPC8106FOC chip.
; Unlock the AUX port.
; Setup for the panel and enviroment.
; Setup the standard VGA registers.
; Setup the attribute registers.
; Blow the DAC with mode 12h colors.
; Clear VRAM - just to be nice.
; DOS - Exit with Return Code.
; This gives us a clean exit under
;
MS-DOS.
X12-AN-003-02
Programming Notes and Examples
SP3-23