Z80 TRAP and CP/M
cclist at sydex.com
Sun Apr 2 19:03:09 CDT 2006
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
More information about the cctech