IBM RT Series Hardware Reference Manual page 248

ORG 0500H
STATUS_BYTE DB
ABSO ENDS
PORT B EQU 61H
TIMER EQU 40H
; ----- EQUATES fOR CARD PORT ADDRESSES
SEQ_ADDR EQU OC4H
SEQ_DATA EQU OC5H
CRTC ADDR
EQU
OD4H
CRTC-ADDR B EQU OB4H
CRTC::DATA- EQU OD5H
GRAPH 1 POS EQU OCCH
GRAPH-2-POS EQU OCAH
GRAPH::ADDR EQU OCEH
GRAPH DATA EQU OCfH
M I SC OUTPUT EQU
OC2H
I N_STAT_O EQU OC2H
I NPUT_STATUS_B EQU OBAH
INPUT_STATUS EQU
ODAH
ATTR READ
EQU
ODAH
ATTR::WRITE EQU OCOH
; ----- EQUATES fOR ADDRESS REGISTER VALUES
S RESET EQU OOH
S-CLOCK
EQU
01H
S-MAP
EQU
02H
S-CGEN
EQU 03H
S::MEM EQU
04H
C HRZ TOT EQU OOH
C-HRZ-DSP
EQU 01H
C-STRT HRZ BLK
EQU
02H
C-END iiRZ BLK
EQU
03H
C-STRT HRZ SYN [QU 04H
C-END HRZ 5YN EQU 05H
C-YRT-TOT-
EQU 06H
C-OYERFLOW
EQU 07H
C-PRE ROW
EQU
08H
C-MAX-SCAN LN
EQU 09H
C-CRSR START
EQU
OAH
C-CRSR-END
EQU
OBH
C-STRT-HGH
EQU OCH
C-STRT-LOW
EQU ODH
C-CRSR-LOC HGH
EQU
OEH
C-CRSR-LOC-LOW
EQU OfH
C-YRT 5YN 5TRT EQU 10H
C-LGHT PEN HGH
EQU
lOH
C-YRT 5YN END tQU 11H
C-LGHT PEN LOW EQU 11H
C-YRT DSP END
EQU 12H
C-OFF5ET -
EQU
13H
C-UNDERlN lOC EQU 14H
C-STRT VRT BlK EQU 15H
C-END VRT BLK
EQU
16H
C-MODE CNTL EQU 17H
C-lN caMP EQU 18H
G SET RESET EQU
OOH
G-ENBL SET EQU 01H
G-ClR COMP
EQU 02H
G::DATA_ROT EQU
03H
G READ MAP EQU 04H
G-MODC
EQU 05H
G-M I SC
EQU
06H
G::COLOR EQU
07H
G_BI T_MASK EQU 08H
P MODE EQU 10H
P-OYERSC
EQU
l1H
P:::CPlANE EQU 12H
P _HPEl EQU
13H
SUBTTl
; ----- CODE SEGMENT
CODE SEGMENT PUBL I C
INCLUDE YPOST. INC
SUBTTl YPOST. INC
PAGE
;--
...
--
POST
ASSUME CS: CODE, OS: ABSO
ORG OH
DB 055H
DB
OAAH
DB 020H
108 IBM Enhanced Graphics Adapter