I am attempting to try to get the system date for my PC with the DOS function AH = 2A. As you can see from the picture below, I'm having a bit of an issue getting DH, DL and AL. CX comes up when I run it and I'm able to get the year 2017.
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2I don't think `int 21` has been executed yet, that picture tells us nothing. What's in `DX` **after** it has executed? – Jester Jan 30 '17 at 01:04
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well, I added int 21 on line 102 to run. but it looks like it gets to line 102 and halts. – DrSoloX Jan 30 '17 at 01:14
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2`p` executes a loop, a repeated string instruction, a software interrupt, or a subroutine. So after assembling the 2 instructions, `p` executed the `mov ah, 2a` and showed the register dump. the last line is the instruction ready to be executed next, not the last instruction executed. Do another `p` to do the `int 21` – Michael Petch Jan 30 '17 at 01:41
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Can you give more detail about what the problem is. I tried your little program and it worked for me: CX=07E1 (2017), DX=011D (Jan 29), AL=0 (Sun). Did you actually execute the int 21? In your dosbox it looks like you stopped before it even executed.
Rob Gardner
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no he didn't. the INT 21 debug shows is the NEXT instruction, so DX/CX shown is the values before the call – Tommylee2k Jan 30 '17 at 17:02