PiDP‐10 tests: examine and deposit
The examine and deposit switches are used to view or change the state of memory locations. The examine/deposit this switches take the address from the address switches, and the examine/deposit this take the address from the memory address register, and incremented by one before use.
The data is displayed in the memory indicator lights. These can also display data under software control. The small triangular PROGRAM DATA and MEMORY data lights indicate which function is currently active.
Put all switches in the up (off) position.
Start the emulator.
Put 700540000000 (DATAO PI,0) in data switches.
Push XCT.
⟹ PROGRAM DATA should turn on.
⟹ MEMORY DATA should turn off.
Put 1234 in address switches.
Put 111111 in data switches.
Push DEPOSIT THIS.
⟹ MEMORY ADDRESS lights should show 1234.
⟹ Memory indicators should show 111111.
⟹ MEMORY DATA should turn on.
⟹ PROGRAM DATA should turn off.
Put 333333 in data switches.
Push DEPOSIT NEXT.
⟹ MEMORY ADDRESS should show 1235.
⟹ Memory indicators should show 333333.
Put 1234 in address switches.
Push EXAMINE THIS.
⟹ MEMORY ADDRESS should show 1234.
⟹ Memory indicators should show 111111.
Push EXAMINE NEXT.
⟹ MEMORY ADDRESS should show 1235.
⟹ Memory indicators should show 333333.