Hi Folks,

It's been awhile and here finally is a new BeebSID disk - Queen - one of my favourites!





Controls:
A-O - pick a song
TAB - switch between Play All / Play one song.
Spacebar - Pause
Return - unpause

There's not a bad collection of disks now - I made a summary page of all ten disks here:
http://www.pitfalljones.com/bbc-sidquiz/sid_programs.htm


I finally figured out how to fixup Sids that had zero play addresses and do the relocation more successfully as well.

I discovered quite a few Sids assume there is other C64 hardware available that the BBC won't have - timers for instance at $DCxx and $DDxx.
They normally have 'RSID' in the header instead of 'PSID'.

Some will also use memory outside of their load range in areas like $2C0 and that has to be relocated as well.

Tricky stuff!

Anyway I'm glad I've finally cracked this one - I started it last year would you believe!

- PJ

Fantastic work Mr. Jones, can't wait to get my SID up and running now.

I thought you'd retired PJ

Excellent work as ever and a great addition to your famous collection

Thanks for the feedback guys.

Ha! ha! Yes - news of my 'retirement' was premature - I was going thru an extended period of programmers block...

I just couldn't get those damn Sids to relocate properly - in the end I cheated - I used a modified version of the PC Sidplayer program that saves out memory access information - that helped to identify what bytes needed address fix-ups.

I would create a new Sid file first that I could then test on the PC - a lot faster than trying to make a BBC disk and test that.

Of course a relocated SID still might not work on a real BBC for a number of other reasons....

- PJ

That's not cheating, it's making effective use of available resources. Looking forward to getting these on the go these when I get mine up and running. Christmas will sound wonderfully 8-bit this year...

d.

Well done for singularly keeping the SID charts alive!