Re: [cc65] char-copy and interrupts (C64)

Date view Thread view Subject view

From: Spiro Trikaliotis (trik-news_at_gmx.de)
Date: 2003-03-14 12:32:54


Hello,

just a correction to myself:

I myself wrote:

> SEI/CLI is not more readable, it is also more reliable!

"SEI/CLI is not *only* more readable, ..."


Another idea: Why not provide little IRQ and NMI handlers
that don't do anything but mapping the I/O in, executing the 
original interrupt handler (with PHP/JSR, of course), 
after returning from that one restoring the port 1 and doing
the RTI? This way, one would not loose one IRQ/NMI on the most
portable and reliable way.

This is something I always wanted to tell the people who just
poke the CIA 1 to disable the IRQ.

Spiro.

----------------------------------------------------------------------
To unsubscribe from the list send mail to majordomo_at_musoftware.de with
the string "unsubscribe cc65" in the body(!) of the mail.


Date view Thread view Subject view

This archive was generated by hypermail 2.1.3 : 2003-03-14 12:30:28 CET