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TI-42 "MBA" Programmable Calculator with Diagnostics

The TI-42 configuration below is identical to our Original configuration, except that it includes diagnostics.

If any errors occur during operation, the Diagnostics window should display the last instruction decoded. The window also accepts a few debugging commands. Use ‘?’ for help.

TI-42 Programmable Calculator
2nd

Diagnostics

Stopped

ROM Activity

[No ROM address selected]

Operational Registers

A 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
B 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
D 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Storage Registers

X0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
X1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
X2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
X3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
X4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
X5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
X6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
X7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Y0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Y1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Y2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Y3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Y4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Y5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Y6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Y7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0