Authored by J.G.Harston
Last update: 23-Jun-2021
| BBC BASIC programming tips |
| MDFS::Info.Comp.BBCBasic.ProgTips | Search |
| DropPAGE.txt | Dropping PAGE to increase BASIC memory. |
| ShortcutIF | Shortcutting ANDs and ORs in IF statements. |
| Tokens.txt Tokenise | Tokenising BBC BASIC program code. |
| Format.txt | Determining BBC BASIC file format. |
| BBCFile | BBC BASIC code to read and write Acorn format BASIC data files written and read with PRINT# and INPUT#. |
| BBCFile.vb | Visual basic code to read and write Acorn format data files written and read with PRINT# and INPUT#. |
| BBCFile.c | 'C' code to read and write Acorn format data files written and read with PRINT# and INPUT#. NOTE - UNTESTED, PROBABLY CONTAINS ERRORS. |
| CRCs.htm | Calculating 32-bit ZIP CRCs (ZIP CRC-32) and 16-bit CRCs (X/Y/ZMODEM,
Acorn RFS/CFS).
I couldn't believe how difficult it was to track down actual code for calculation CRC-32 cyclic redundancy checks for ZIP files instead of piles of in-depth theoretical treatment, so I have put together here the code for BBC BASIC, 6502, Z80, ARM, PDP-11 and C. |
| Primes.txt Primes | Comparison of various prime number algorithms. |
| CoProCode AS.SRC VList.src | *NEW* Writing machine code utilities that interact with BASIC. |
| AssemIF | *NEW* Conditional assembly with the BASIC assembler, IF/ELSE/ENDIF. |
| 6502 ON ERROR LOCAL
LocalErr (L) LocalError (L) | |
| LOCALERROR | |
| CursorKeys | |
| VDU | |
| Windows ProgTips | Programing tips for BBC BASIC for Windows. |
Any of this code can be used in your own programs. If you use it in a commercial product, please acknowledge the source in the documentation.
Authored by J.G.Harston