| |
lft
Registered: Jul 2007
Posts: 369 |
GCR decoding on the fly
Here's how to do it:
http://linusakesson.net/programming/gcr-decoding/index.php |
|
... 149 posts hidden. Click here to view all posts....
|
| |
chatGPZ
Registered: Dec 2001
Posts: 11391 |
protip: a pdf of that one is at spiros website =P |
| |
Cruzer
Registered: Dec 2001
Posts: 1048 |
About the dd00/dd02 issue - wouldn't it be an idea to add a feature where you can ask the loader on the drive side to ignore the register for x amount of seconds, if you have an effect that absolutely has to use the "wrong register"?
Of course this is rare, and the feature would take valuable bytes on the drive side, so maybe it wouldn't be an idea after all. :) |
| |
Danzig
Registered: Jun 2002
Posts: 441 |
Quote: protip: a pdf of that one is at spiros website =P
you've narrowed my possible profit to smth like zero. ;) |
| |
chatGPZ
Registered: Dec 2001
Posts: 11391 |
you can still bring it to next X and throw it at whoever managed to use a broken loader =) |
| |
Danzig
Registered: Jun 2002
Posts: 441 |
Quote: you can still bring it to next X and throw it at whoever managed to use a broken loader =)
I can bring it to next X, take each sheet and role you pipes you have to smoke all the way... |
| |
chatGPZ
Registered: Dec 2001
Posts: 11391 |
sounds like a plan =) |
| |
Krill
Registered: Apr 2002
Posts: 2982 |
Quote: About the dd00/dd02 issue - wouldn't it be an idea to add a feature where you can ask the loader on the drive side to ignore the register for x amount of seconds, if you have an effect that absolutely has to use the "wrong register"?
Of course this is rare, and the feature would take valuable bytes on the drive side, so maybe it wouldn't be an idea after all. :)
Do you mean:
.define IDLE_BUS_LOCK 0 ; C-64 only: allow for arbitrary $DD00 writes ($00-$FF) when the loader
; is idle (good for raster routines with LDA #value:STA $D018:STA $DD00, e.g.)
Has been a feature since day 1. And yes, nobody seems to have used it so far. :) |
| |
Oswald
Registered: Apr 2002
Posts: 5095 |
Quote: Do you mean:
.define IDLE_BUS_LOCK 0 ; C-64 only: allow for arbitrary $DD00 writes ($00-$FF) when the loader
; is idle (good for raster routines with LDA #value:STA $D018:STA $DD00, e.g.)
Has been a feature since day 1. And yes, nobody seems to have used it so far. :)
you have invented that for me, for soiled legacy's chessboard stretcher part ;) |
| |
HCL
Registered: Feb 2003
Posts: 728 |
..also have it in my loader, but i think i only used it in "1991" so far. |
| |
Krill
Registered: Apr 2002
Posts: 2982 |
Quote: you have invented that for me, for soiled legacy's chessboard stretcher part ;)
Yes, but that was a previous loader, different code base and all. But i withdraw the nobody-ever-used-it part of my statement, sorry. :) |
| Previous - 1 | ... | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 - Next |
