Changes log of ugBASIC language

Beta branch (c128)

MAIN ALL cpc atarixl atari cocob coco coco3b coco3 coleco c128z c16 c64 c64reu vic20 d32b d32 d64b d64 gb msx1 pc128op plus4 sc3000 sg1000 mo5 to8 zx

Learn to Write (Retro)Videogames! new sei italiano?
Learn to Write (Retro)Videogames! new sei italiano?
Embark on a journey into the (retro)programming of three simple video games, three "easy pieces", which will help you become familiar with some basic concepts, to apply them to computers with limited resources.

The purpose of this book, therefore, is not just to illustrate a source code: instead it offers ideas for actively developing the three easy pieces.

Programming while reading.
Learn to Write (Retro)Videogames! new sei italiano?
Embark on a journey into the (retro)programming of three simple video games, three "easy pieces", which will help you become familiar with some basic concepts, to apply them to computers with limited resources.

This log contains only updates since the last released version (1.18).


  • BETA UPDATE [rev. 20260215] BETA


    commit: 9f2f44c7d (on github)
    • Add support for SG4 mode under 6847 #1232


  • BETA UPDATE [rev. 20260213] BETA


    commit: 13e05e5b4 (on github)
    • Add support for SG4 mode under 6847 #1232


  • BETA UPDATE [rev. 20260124] BETA


    commit: 4eb8babdd (on github)
    • Fixed optimization on string assignment on array


  • BETA UPDATE [rev. 20260108] BETA


    commit: 2b1aa08ce (on github)
    • Add FAST (2Mhz) trick on multiplexer sprites under c64 mode of c128
    • Add support for fine horizontal scrollling #330


  • BETA UPDATE [rev. 20260104] BETA


    commit: 7c03f0879 (on github)
    • Add support for fine horizontal scrollling #330
    • Optimized peephole for 6309
    • Optimization of ef936x unused variables
    • Optimization of ef936x's vbl call


  • BETA UPDATE [rev. 20260101] BETA


    commit: 147b4f272 (on github)
    • Optimized banked access
    • Optimization of unread variables
    • Optimization of ef936x variables
    • Fixed console initialization if nothing is changed
    • Fixed console initialization on ef936x on startup


  • BETA UPDATE [rev. 20251231] BETA


    commit: 8d572fc5d (on github)
    • Fixed inline variables on 6502 code generation
    • Fixed variable generation under 6502
    • Added preliminary support for locally unused variables optimization
    • Optimize direct assignment of array elements #1230


  • BETA UPDATE [rev. 20251226] BETA


    commit: be3d7948c (on github)
    • Extended dynamic string library to support filling
    • Optimized array access on dynamic string type
    • Optimization of string descriptors copy #1228


  • BETA UPDATE [rev. 20251220] BETA


    commit: 26ba7b691 (on github)
    • Optimization of string descriptors copy #1228


  • BETA UPDATE [rev. 20251216] BETA


    commit: 88a36ceb9 (on github)
    • Add support for REU/GeoRAM for targets c128 and c128z #1224


Any problem?

If you have found a problem, if you think there is a bug or, more simply, you would like something to be improved, write a topic on the official forum, or open an issue on GitHub.
Thank you!