Welcome Guest. Please Login or Register. Apr 1st, 2018, 05:13am
ATTENTION MEMBERS: Conforums will be closing it doors and discontinuing its service on April 15, 2018. We apologize Conforums does not have any export functions to migrate data. Ad-Free has been deactivated. Outstanding Ad-Free credits will be reimbursed to respective payment methods.
Thank you Conforums members.
Speed up Liberty BASIC programs by up to ten times!
Compile Liberty BASIC programs to compact, standalone executables!
Overcome many of Liberty BASIC's bugs and limitations!
Looks like I've got some study ahead. I only programmed assembly on 6502... Lol.
That's not such a terrible background. The 8080/Z80 (which were my introduction to assembly language programming) would probably have been better, but at least the 6502 is little-endian and has a conventional stack.
You may be amused to learn that BBC BASIC for Windows still contains a residue of its 6502 ancestry. To read the 'dot pattern' of a character (assumed to be an 8 x 8 matrix, which it was on the BBC Microcomputer) you allocate an 8-byte block of memory and call an 'OS' routine. The character code is passed in the A% variable, the least-significant byte of the memory address in the X% variable and the most-significant byte of the memory address in the Y% variable; these correspond directly to the A, X and Y registers of the 6502!
Logged
