commit 805e1925487d0c0761dfc00e89316e634193b166 from: Sven M. Hallberg date: Thu Jun 11 19:37:53 2026 UTC update README commit - 7811366b4562dca787af47d026ad16855a5e7469 commit + 805e1925487d0c0761dfc00e89316e634193b166 blob - 5caf71a19651140fe7380f86d70165238e57b0c0 blob + 77eea7b57a3b02b2f9ff85aa29f9799feb659e63 --- README +++ README @@ -22,13 +22,14 @@ Processing the roughly 1000 lines of LINEUTIL takes several minutes, so be prepared to take some breaks. :) - Speed woes aside, for a program of around 200 lines of code, BASASM + Speed woes aside, for a program of less than 300 lines of code, BASASM is perhaps surprisingly feature rich: - Mnemonic instructions, aware of operand sizes. - Decimal and hexadecimal notation. - Symbolic labels, absolute and relative addressing. - Locally-scoped labels. + - Listing label definitions for "export" to separate programs. - User-defined symbolic constants. - Single-pass operation with forward references. - Range checks for operands. @@ -36,13 +37,13 @@ - Directives to output arbitrary bytes, words, strings. - Directives to alter and limit the output position. - String representation for bit pattern output (...XX...). + - Adjusting the BASIC heap size for output below 40K. About 70 more lines implement subprograms to save PRG files, issue - drive commands, dump memory, and a few others. The opcode table - takes a further 80 lines for a total just shy of 350. + drive commands, dump memory, and a few others. This repository contains listings of the relevant PRG files in - ASCII. The transfer is facilitated by two C programs that can + UTF-8. The transfer is facilitated by two C programs that can unpack a D64 disk image (und64) and output BASIC PRG files in plain text (listprg). Note: Commit time stamps are not representative beyond obviously providing upper bounds. @@ -65,7 +66,8 @@ MKALLTOK write a PRG file that contains every possible BASIC token (used for listprg) DISKCOPY duplicate a disk block by block (incredibly slow) - MKOPCODES generate OPCODES file + MKOPCODES generate OPCODES file + OPCODES.B source file to be combined with MKOPCODES Notes on encoding: Several (printable) characters in the Commodore character set differ from ASCII - arrows, for instance, in place of