Description

"X-BASIC" aka "MSX-BASIC KUN", "KUN BASIC" or "TURBO BASIC" is a run-time compiler for MSX-BASIC that is commonly used to speed up existing MSX-BASIC programs and create demos and games.

Versions

There are three versions of this compiler, the first two versions are officially released on cartridge, but hacked binary versions were also available:

• 1.0 - MSX-BASIC Kun (1986)
• 2.0 - MSX-BASIC Kun Plus (1989)
  • supports the new screen mode (SCREEN 10-12) of MSX2+
  • supports VDP functions for registers added in V9958
  • supports scroll instruction (SET SCROLL)
  • a sample disc is added
• 2.1 - MSX-BASIC Kun Turbo (1992)
  • supports multiplication instructions for the new CPU R800 in MSX turbo R computers
  • supplied as a disk instead of a ROM cartridge

Version 1.0 is included in the MSX2 Talent TPC-310 computer as TURBO BASIC.

A slightly modified version of MSX-BASIC Kun Plus is included in the MSX2+ Sanyo PHC-70FD and PHC-70FD2 computers with internal disk drive(s). It comes with an extra instruction, CALL BC that initialises KUN BASIC.

MSX-BASIC Kun Turbo is also included in the GR8NET combo cartridge as a ROM.

Instructions

According the used version, X-BASIC adds 6 or 7 instructions to MSX-BASIC.

Notes:

• For the instructions that begin with CALL, you can replace CALL by _ (the underscore character). A space is not required after this character.

• Sometimes CALL TURBO OFF and CALL TURBO ON were renamed by the coders of the MSX scene in their products (games, demos, disk magazines, tools).

Documentation: http://www.konamiman.com/msx/msx2th/kunbasic.txt

Note: the above documentation is included with MSX-BASIC Kun, so not sure why they say that the REM commands (#C, #I, #N) are new