Profile cover photo
Profile photo
Colin King
980 followers -
Using know-how as a tool to get interesting problems solved
Using know-how as a tool to get interesting problems solved

980 followers
About
Colin's interests
View all
Colin's posts

When you get a linear regression with an R^2 of 0.9997 you know that you are on to a good thing.

Post has attachment

Post has attachment

Post has shared content
Building snaps with classic, devmode, and strict confinement

Post has attachment

Post has attachment
Giving our new rescue rabbits a bit of a run around...

Post has shared content
This week, let's talk about C64 disks and copy protection. We found a whole site about it, so pop over there and have a feast - we'll wait for you:
http://www.c64copyprotection.com/the-jim-drew-interview/
Back with us? Our featured link this week is one of a pair of guest posts on Michael Steil's site. The 15 Second Copy story, by Mike Pall, is about copying over a parallel cable - the 1541 disk drive being a 6502 computer system in its own right and having a VIA inside with a spare port. More about this here:
http://sta.c64.org/cbmpar.html
The other story on pagetable is the story of FCopy, by Thomas Tempelmann, which uses only the original serial cable, and copies in a few minutes - 5 times faster than the default, not as fast as the parallel version, but needing no hardware mods. Getting the necessary information and understanding in those days, especially if you're one of the first to think of something, is totally different from the picture today.
Be sure to read the comments on the articles - good extra information in there. Such as Thomas speaking of the 1541's software being written as a pair of tasks, as a remnant of the prototypes which had a pair of CPUs even in the floppy drive: the tasks for the second processor were moved in to the interrupt routine.

updated the bcc snap, now it incorporates even more bcc tools!

The BFQ I/O scheduler in linux-next has most excellent comments in it.

Post has attachment
Wait while more posts are being loaded