Z80 TRAP and CP/M

[Chuck Guzis]

On 4/2/2006 at 6:52 PM Jim Battle wrote:

>Chuck, I have no answer for you, but it reminds me of a point I've 
>always wondered about.  The CP/M service call to 0005 takes three bytes 
>-- why didn't they move it three bytes forward so that the one byte "RST 
>1" call could have been used instead?

That answer would lie in the mind of the late Gary Kildall, I'm afraid.
AFAIK, only RST 7 is used in all of CP/M--and that's as a breakpoint patch
in DDT.

Cheers,
Chuck