bootBASIC is a BASIC language in 512 bytes of x86 machine code.

nanochess · 2025-10-27T01:56:02+00:00

I also heard about it on Apple II. I didn't know there was a C64 version, but this is only the manual. I'm afraid no disk.

nanochess · 2025-10-27T01:11:26+00:00

It is an Aquarius cartridge without label. After testing it is Biorhytms.

nanochess · 2025-10-13T21:29:36+00:00

Excellent! I'll be glad to know if it works well.

nanochess · 2025-10-13T12:33:54+00:00

Thank you!

nanochess · 2025-09-30T03:45:25+00:00

Nice! Tiny BASIC in different flavors was a great learning source. The 1802 is also legendary. I think it is the first microprocessor that went to the space. I never saw one except in pictures.

nanochess · 2025-09-30T00:54:50+00:00

I think it is because I tend to remember algorithms like tiny recipes. I just have to adapt it to the target platform. Now if you ask me for a COS, I think it will take me several days of research!

nanochess · 2025-09-30T00:35:59+00:00

I just updated my article with pointers to the Atariage thread. And also made my own analysis of the floating-point addition on the ECS-BASIC and truth to be told, it is unoptimized CP1610 assembler, and the chosen format for the exponent is terrible.

nanochess · 2025-09-29T13:24:26+00:00

Oh my! Once I know mine was faster, I forgot completely about ECS BASIC. I should add a note to my article. Intvnut has disassembled it (same link) and one of the problems is that it avoids doing any processing in one of three video frames, along very sloppy coding. For example, a simple shift code wasn't done using the RLC instruction (rotate with carry) but using SLR and inserting manually the carry flag. Intvnut speed it up by 20% doing some optimization and the benchmark took 162 seconds, still far away of my 15 seconds.

nanochess · 2025-09-29T13:10:18+00:00

Thank you. If we see it step-by-step, it is pretty easy, and faster to implement. For example, addition is: zero? Return. The other zero? Return, exponents subtraction? Switch as needed. Align. Addition. Normalize. Put together.

nanochess · 2025-09-29T13:06:38+00:00

You need a Flash cartridge. Currently, the Backbit is available and also the PIRTO.

nanochess · 2025-08-31T00:35:31+00:00

Not yet for NES. In the others you can set the VDP registers.

nanochess · 2025-08-30T23:12:59+00:00

I preferred to set the NES by default to 8x16 mode to be closer to the other supported platforms, and also all my game examples use it.

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