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4i:JO
4:i.i;::i
4
':;ii;:'i
~:;j;::!(i
::::;10
i:::'!:::':-::
._! .... !i::.!
610
::::;C)i.JF:C:E
::;CiU):;,' C E
SOUF'CE
'::;(1
Li
PC::
E
SCUf?CE:
' : ::;OU);::CE
:=' : ;OUF:C::E
:=':;OURCE
SCUF~:CE
:::;()UF: CE
:=':;OUPCE
:=' : ;OUF:C:E
Appendix H: I/O Sample Programs
255
!
RETURN DATA TO PARAMETER
HPI
SETUP ROUTINE
PC
Err::;
TC
'::;!JB F'':::EiJDC C)P
C::::iy-rrr:IIt··j:=' : ; F' i ::rRi·ci COUfF)
\iE:::;:'
I F\' F' F i!? ArciE:TEF: COUr·rr
FETCH SELECT CODE AND VERIFY CARD IS A 98034A
FETe!···!
CO!"' 1 !·c!fil···1D ' : ::;TF' I l···1G F'Ai?Hi·'iETE1? Ht·m OUTPUT IT
L. ..
DS
:::::~:::~
LDf:r
:::;e
1
:=' : ;TA
p.::.
' : ::+:: I F'
IF
>=2
T~
~2,
GIVE ERROR 8
SET UP F'H HND DO STATUS SEQ
ON
CF~D
TO VERIFY IT IS A
98(84A INTERFACE
LDH
SEE IF THERE IS ANYTHING
LDA
:::;t.:=..t ' . ..1:::.4
AND ="100B
C:::BL
SFC . ; . : .
FET 1
OUTPUT, IF NOT, SKIP
MAKE Sl8E I AM
ACTI~~
cor·1TROLLEF:
I
:=' : ;)<IP IF \'E:::;
ELSE GIVE ERROR 500
NOW OUTPUT THE
CCMMA~OS
SEND GJT CMD
b"fIL
t·10T '/ET
740
SOURCE
STAnJS SEQUENCE FOR 98034
C~?D.
NOTE THAT THIS SEQUENCE
750
SOURCE
COULD FORCE THE CARD TO VIOLHTE THE IFC TIME SPECS IF
760
SOURCE
THE PJLLOWING
CONDITIO~3 E~IST:
:::;C~L!~~C:E
~=;Clt.IRC:E
1) CARD IS NOT
S~3TEM
CONTROLLER
BEFORE THE DIF:
3) THE CONTROLLER PULLS IFC AFTER THE LDH P5 BUT
BEF(~E
810
SOURCE
THE DIR
820
S(~RCE
THE ONLY ALTERNATIVE TO THIS IS TO DIR BEFORE THE LDH R5.
:=:3~J
:::;OUFLE
TH
1:::(
Hm'~E!',"ER
COULD COi'IPF'Ol'l r:=.;;E Hr·ry'
S\'HCHRm·~u:=;
I HTERF:UPT
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