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- Newsgroups: comp.sys.cbm
- Path: novice.uwaterloo.ca!dfevans
- From: dfevans@bbcr.uwaterloo.ca (David Evans)
- Subject: Re: Some poke commands I forgot..
- Sender: news@novice.uwaterloo.ca (system PRIVILEGED account)
- Message-ID: <DLnFqr.L2q@novice.uwaterloo.ca>
- Date: Tue, 23 Jan 1996 19:35:15 GMT
- References: <DLJICv.3r4.0.sheppard@torfree.net> <DLLr73.FF8@novice.uwaterloo.ca> <4e30mr$19q@sdcc12.ucsd.edu>
- Nntp-Posting-Host: bcr.uwaterloo.ca
- Organization: University of Waterloo
-
- In article <4e30mr$19q@sdcc12.ucsd.edu>,
- Po-Ching Lives! <ckaiser@sdcc13.ucsd.edu> wrote:
- >In <DLLr73.FF8@novice.uwaterloo.ca> dfevans@bbcr.uwaterloo.ca (David Evans) writes:
- >
- >> Bit 7 of 648 ($0288) controls key repeat. poke 648,peek(648)or128 will get
- >>this together.
- >
- >Noooooo! Location 648 controls the page that the Kernal screen
- >editor writes to. Thus, the POKE you just did would start sending
- >screen data to $8400 and mean that even RUN-STOP/RESTORE would not
- >recover (you have to blindly type POKE 648,4 to return screen to
- >$0400.)
- >
- >The location you're thinking of is 650 ($028A):
- >
-
- Oops. :-)
-
- >> Location 56325 ($DC05) handles one half (upper byte, I think) of the CIA
- >>timer that produces the IRQs, and thus the cursor. Muck with it for lots of
- >>nifty effects (including crashing the machine.)
- >
- >In case you chop it too badly, default is 55. This location won't
- >actually crash the machine per se, but it could make typing hell.
- >
-
- At least I got that one right.
- It's kind of neat watching the machine gradually slow down as you increase
- the IRQ rate.
-
- --
- David Evans (NeXTMail OK) dfevans@bbcr.uwaterloo.ca
- Computer/Synth Junkie http://bbcr.uwaterloo.ca/~dfevans/
- University of Waterloo "Default is the value selected by the composer
- Ontario, Canada overridden by your command." - Roland TR-707 Manual
-