Finding The Problem - HP 1652B Getting Started Manual

Finding the
Problem
You look at the state listing menu to see what the data is in states
+ 0000 through + 0013. These are the first stored states after trigger.
You know your routine has five "OUT TO PORT" memory writes.
The microprocessor, does address the correct memory locations. Now
you compare the data from the software engineer as listed below, with
what is listed in the State Listing menu in figure 27-5.
:P
16528/1653B
Timing/State/Scope Measurement Example
Front-Panel Reference
27-7
0550 OUT TO PORT
MEMORY WRITE
0551
MOVE
MEMORY READ
0552
DECR MEMORY READ
0553
OUT TO PORT MEMORY WRITE
0554
MOVE MEMORY READ
0555 DECR MEMORY READ
0557
OUT TO PORT MEMORY WRITE
0558 MOVE
MEMORY READ
0559 DECR
MEMORY READ
0541
DECR
MEMORY READ
0182
OUT TO PORT
MEMORY WRITE
0542
MOVE MEMORY READ
0543
DECR MEMORY READ
0544
OUT TO PORT MEMORY WRITE
INIT ) - [State Listing 1
Harkers 1 Off /
Lobe 1
Base : F
+0003
+ooo I
+0002
+0003
+0004
+ooos
+0005
fzizFj
+oooe
+0009
+0010
OS!50
055 1
0552
0553
0554
0555
0557
0558
0559
054 I
we2
+0011 OS42
+OOl? 0543
+0013 c544
+0014 0545
+0015 089::
OUT TO P l7EtlORY WRITE 1.48 US
HO'JE tlEtlORY REC\D 3 00 us
DECR HEttORY REClD 2.00 us
OUT TO P flEtlORY WRITE 1.52 us
HOVE
ttEflOR Y RECID 2 00 us
OECR tlEtlOR v RECID 2.00 us
OUT TO P
tlEflORY HRITE
1.48 us
HOVE tlEHORY RECID 2 00 us
DECR FIEnORY REFID 1.52 us
GECR nEnORY REFID I 49 us
OUT TO P flEtlORY HRITE 2.00 us
HOVE tlEtlORv REfiD 1 52 us
DECR HEtlORv READ 2 00 us
OUT TO P flEtlORV
HRITE
1.48 us
HOVE IlEtlORV READ 2 00 us
HOVE
tlEtlOR v REA3
3 00 us
Figure 27-5. State Listing Menu