Table 3-1. Program Modifications For Table 4-12 In The Hp5501A System Manual - HP 5501B Operating And Service Manual

Table 3-1. Program Modifications for Table 4-12 in the HP5501A System Manual

0: gsb "warmup"
38: "warmup":clr 7; rem 7
39: wrt 709,"0O0X"
40: wrt 709,"1X2X3O"
41: if rds(7)<128; ret
42: rds(709)→B
43: if B<64;gto "bus error"
44: B-112→B
45: if B>=8;B-8→B
46: if 8>=4;B-4→B
47: if B>=2;B-2→B
48: if B=1;dsp "LASER NOT READY"
49: if B=1;gto -11
50: gsb "check"
51: ret
52: "bus error":
53: prt "SRQ ASSERTED BUT 10745A
STATUS BYTE,BIT6 CLEAR"
54: stp
55: gto 0
56: end
3-16
Branch to subroutine to monitor laser
status
Send Device Clear: Send Remote Enable
Send 10740A Backplane reset preset x-
axis counter and select normal
resolution
Transfer x-axis counter (10760A),
contents including error bits to 10745A
If SRQ false ~REFERENCE ERROR BIT must
be false laser ready
Read 10745A STATUS BYTE to verify that
it is asserting SRQ
If 10745A not asserting SRQ; alert
operator.
Isolate ~REFERENCE ERROR BIT
If true; 5517A not READY
Try again
Otherwise, use subroutine "check" to
identify remaining error
Return to step one if only
true
Alert operator that another device
asserted SRQ
Return to step 0 if CONTINUE pressed
HP5501B
Operation
~OVF ERROR