[comp.sys.mac.programmer] shutting off the instruction cache

gillies@uiucdcsp.cs.uiuc.edu (03/29/88)

I don't think it was a stupid question.  I know how terribly hard it
is to find a 68020 manual.  I cannot find one in this town, which has
the U of I, and an engineering college of 8,000, and some small
computer R & D companies.  I even had trouble finding a copy when I
recently went to Sunnyvale California!!

Motorola is very poor at documenting their chips.

mcdonald@uxe.cso.uiuc.edu (04/05/88)

>You might even take 10 minutes to explain that in most computers, you
>are protected from writing on your programs 

This statement is clearly false, starting at the phrase "in most computers".


Most computers in the world use the 8088/8086 chip, in which you most
certainly CAN use self-modifying code!