SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 246

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

AttribTable:
;**********************************************************************
;
;
;
;
;**********************************************************************
Step8:
; ADDITIONAL SUPPORT ROUTINES
;----------------------------
; RunTable
; This routine interprets the configuration tables that we have
; presented above.
; index/data to a simple port write of data (ie. if High bit on
; Port value is set, then branch to simple port write BR3)
;
;
;
;
Programming Notes and Examples
SP3-20
STEP8 - Clear Vram. Initialize video memory with "normal" attributes
db
db
db
mov
mov
mov
xor
mov
cld
rep
ret
Entry:
Exit:
Uses:
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
and ASCII spaces (blanks).
00h, 01h, 02h, 03h, 04h, 05h, 14h, 07h
38h, 39h, 3Ah, 3Bh, 3Ch, 3Dh, 3Eh, 3Fh
0ch, 00h, 0Fh, 00h, 00h
ax, 0B800h
es, ax
cx, 4000h
di, di
ax, 720h
stosw
CS:SI - Pointer to big register table
n/a
AX,DX,SI
PW is a mask bit that causes a branch from
; Video RAM segment
;
; 16k Words = 32k Bytes
;
; normal attribute(7h), ASCII space(20h)
; initialize
X12-AN-003-02
411-1.0
SPC8106