[comp.sys.apple2] Interrupts and the 6551

eldorado@en.ecn.purdue.edu (David D Jansen) (11/25/90)

I was wondering if anyone knows the bitmap of the ACIA registers of the IIc.
The ACIA is the 6551.
Also, I am not exactly sure how to set up interrupt vectors (IRQ).  I used
the MLI to set up a vector in the interrupt table but I don't think the
jump is being made.  Do you have to enable interrupts.  I used a CLI
instruction.  Please send all responses to me.  Thanks.

Dave
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Dave Jansen             |  INTERNET:  eldorado@en.ecn.purdue.edu