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- Date: August 2, 1986 18:49 EDT
- From: B.DUERR (William O. Duerr, GEnie CP/M RT SysOp)
- Sub: MEX114 backspace patch
-
- GEnie does not seem to backspace properly when the character
- delete character is defined as a <DELETE> or decimal 127. It does
- work well when defined as a Control-H or decimal 8.
-
- Mex has a way of converting the back the back space (Control-H)
- to a <DEL> character but not the visa versa. This patch to MEX will
- change the <DEL> to a Control-H when the STAT parameter is on.
-
- First of all varify that you have the same code as I do. I have
- MEX 1.14. You will need DDT, or similar program. The C-128 comes
- with SID, for what we are going to do, I think the program is
- similar enough.
-
- Enter at the A> prompt: DDT mex.com
- Then at the "-" prompt: L4051
-
- at location 4051 you should see a CPI 08 instruction,
- at location 405D you should see a MVI 7F instruction.
-
- To get out of DDT, enter Control-C.
-
- Now get in to MEX as you normally do.
-
- On the MEX command line, enter
-
- POKE $4052 $7F
- POKE $405E $08
- STAT RUB ON
-
- You can now test the program. When you know it works you can
- CLONE it (make a copy of MEX with the modifications in it.)
-
- Don't forget to take the normal precautions when making
- modifications. Take a backup.
-