IBM 5170 Technical Reference page 285

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TITLE 11/22/83 BIOS
.lIST
I NCLUDE SEGMENT. SRC
CODE SEGMENT BYT E PUBL I C
EXTRN
EXTRN
EXTHN
EXTRN
C8042: NEAR
OBF 42: NEAR
DDS:NEAR
PRJ HEX:NEAR
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
01; NEAR
D2: NEAR
P _MSG: NEAR
D2A: NEAR
PRT SEC: NEAR
EXTRN
EXTRN
EXTRN
PROt SHUTDOWN: NEAR
CM3:NEAR
E_MSG: NEAR
PUBLIC
PUBLIC
PUBLIC
PUBLIC
Mn~OHY_SIZE_DETERMINE_l
EQUI PMENT 1
NMI INT , ­
SET::::TOD­
; --­ IN T 12 ------------­ ----------­ -----------------­ ---------­
; MEMORY_SIZE_DETERMINE
TH I S ROUT! NE RETURNSS THE AMOUNT OF MEMORY I N THE
SYSTEM AS DETERM I NED BY THE POST ROUT I NES.
NOTE THAT THE SYSTEM MAY NOT
~E
ABLE TO USE I/O MEMORY
UNLESS THERE I S A fULL COMPLEMENT Of 512K BYTES ON THE
INPUT
PLANAR.
NO REG I STERS
THE MEMORY_SIZE VARIABLE IS SET DURING POWER ON
DIAGNOSTICS ACCORDING TO THE FOLLOWING ASSUMPTIONS:
1. CONfiGURATION RECORD IN NON-VOLATILE MEMORY
EQUALS THE ACTUAL MEMORY SIZE INSTALLED.
2. ALL INSTALLED MEMOHY IS FUNCT I ONAl. I F THE
MEMORY TEST DURING POST INDICATES LESS, THEN THIS
VALUE BECOM[S THE DEFAULT. IF NON-VOLATI LE MEMORY
IS NOT VALID (NOT INITIALIZED OR BATTERY FAILURE)
THEN ACTUAL MEMORY DETERMINED BECOMES THE DEfAULT.
3. ALL MEMORY FROM Q TO 64QK MUST BE CONT
I
GUOUS.
OUTPUT
(AX) = NUMBER OF CONT I GUOUS 1 K BLOCKS OF MEMORY
ASSUME CS:CODE,DS:DATA
fB
1 E
E8 0000 E
Al 0013 R
1 f
CF
MEMORY SIZE DETERMINE 1 PROC FAR ;
- ST
1­ -
'NTERRUPTS BACK ON
PUSH OS SAVE SEGMENT
CALL
!)
OS
ESTABl I Sil ADDRESS I NG
MOV AX.MEMORY_SIZE GET VALUE
POP OS RECOVER SEGMENT
I RET RETURN TO CALLER
MEMORY_SIZE_DETERMINE_, [NDP
; --­ I NT l ' -----­ -------­
~-------------------------------------:
; EQUIPMENT DETERMINATION :
; THIS ROUTINE ATTEMPTS TO DETERMINE WHAT OPTIONAL
DEVICES ARE ATTACHED TO THE SYSTEM.
INPUT
NO REG I STERS
TilE EQU I P FLAG VAR
I
ABLE
I
S SET OUR I NG TH E POWER ON
DIAGNOSflCS USING THE FOLLOWING HARDWARE ASSUMPTIONS:
PORT 3 FA = I NTERfW PT I D REG I STER Of 8250 (PR
II~ARY)
2 FA'" I NTERRU PT I D REG I STER OF 8250 (SECONDARY)
BI TS 7-3 ARE AL\.JAYS
0
PORT 378 = OUTPUT PORT OF PR INTER (PR I MARY)
278'" OUTPUT PORT OF PRINTER (SECONDARY)
3BC = OUT PUT PORT OF PR INTER (MONO-PR INTER)
OU TPUT
(AX) IS SET, BIT SIGNIFICANT, TO INDICATE ATTACHED I/O
BIT 15,14
=
NUMBER Of PRINTERS ATTACHED
BIT '3,12 NOT USED
BIT 11,10,9 '" NUMBER OF RS232 CARDS ATTACHED
BIT 8 '" NOT USED
BIT 7,6
=
NUMBER OF DISKETTE DRIVES
00=1, 01=2 ONLY 1 F BIT 0 1
BIT 5,4 = INITIAL VIDEO MODE
00 - UNUSED
01 - 40X25 BW US I NG COLOR CARD
10 - 80X25 BW US I NG COLOR CARD
11 - 80X25 BW US I NG BW CARD
BIT 3
=
NOT USED
BIT 2 '" NOT USED
BIT 1 '" MATH COPROCESSOR
BIT
a ' " ,
(IPL DISKETTE INSTALLED)
NO OTHER REGISTERS AFFECTED
ASSUME CS:CODE,DS:DATA
FB
lE
E8 0000 E
Al 0010 R
lF
Cf
EQU I PMENT 1 PROC FAR
sfl
PUSH
CALL
MOV
POP
>>>
ENTRY PO I NT fOR ORG OF84DH
I NTERRUPTS BACK ON
I RET
os
ODS
AX, EQU I P fLAC
DS -
EQUIPMENT 1 ENI)P
SAVE SEGMENT REG I STER
ESTABLISH ADDRESSING
GET TH E CURRENT SETT I NGS
RECOVER SEGr·tENT
RETURN TO CALLER
; -­ I NT 2--­ ------------------------­ -------­ -------------------:
; NON-MASKABLE I NTERRU PT ROUT I NE (REAL MODE) :
THIS ROUTINE WilL PRINT A "PARITY CHECK 1 OR 2" MESSAGE
AND ATTEMPT TO FIND THE STORAGE LOCATION CONTAINING THE
BAD PARITY. IF FOUND, TIlE SEGMENT ADDRESS WILL BE
PRINfED. I F NO PARITY ERROR CAN BE FOUND (INTERMITTENT
READ PROBLEM) ?'!???<-WILl BE PRINTED WHERE THE ADDRESS
WOULD NORMALLY GO.
PARITY CHECK' = PLANAR BOARD MEMORY FAILURE,
PAR I TY CHECK 2 = OFF PLANAR BOARD MEMORY FAILURE.
50
E4 80
FE CO
EB 00
E6 80
NM I I NT 1 PROC
- -ASSUME
PUSH
IN
INC
JMP
OUT
NEAR
os: DATA
AX
AL, MFG PORT
AL -
SHORT $+2
MFG_PORT, Al
SAVE OR I G CONTENTS OF AX
INCREMENT NM I COUNT
I N DELAY
SET COUNT
E4 61
A8 CO
IN
TEST
AL, PORT_B
AL, PAR I TY _ERR
PAR I TY CHECK?
BIOS 5-143