Sinclair ZX81
ZXDB
The perfect complement to ZXAS assembler, ZXDB is a complete combined machine code disassembler and debugging program. May be used in conjunction with your own program. Additional features include Single Step, Block, Search, Transfer and Fill, Hex Loader, Register Display and more. Executed by single keyboard entry. The combination of ZXAS/ZXDB plus one of our
Black Holes
Your starship is in an unknown galaxy consisting entirely of black holes which threaten to swallow you. Your skill at the controls and your ability to look and think many moves ahead is the only thing that stands between you and destruction. 16K.
Multifile
Multi-purpose database system. Number, size and headings of files are user-definable, string and numeric data. Files may be created, modified, replaced and searched. Comes with comprehensive documentation describing a host of applications for both business and personal use. 16K.
Slalom
Slalom events always draw great crowds to the ski resorts and the T.V. cameras are never far behind. Skier is under your control and his success in negotiating the slalom posts and achieving a fast time relies entirely on your skill with the ZX81 keys. 16K.
ZXAS
Learn and program in machine code the easy way with this powerful Z80 assembler, commissioned specially for the ZX80 & ZX81. Standard Z80 mnemonics are simply written into REM statements within your BASIC program. The assembly listings, together with addresses and assembled codes are displayed on the screen when assembled. The assembled code is executed