MaxCoderz

There is a 0xC000 limit, because Texas Instruments is evil. Maybe you need to make an app.

Maybe uncomment the BB 6D part

Try hacking away at the crt0 file

As usual, it's still work on PocketNES, Goomba Color, and SMSAdvance for me...

You need the TI-Graph Link *software* to create TI basic programs on your PC. Any TI graph link or TI connect software will you let you send programs, but only the old TI-Graph link software lets you write programs on the PC.

The best method for practical programming is to just call memset or memcpy, those functions are ASM optimized like crazy.

I like how that code writes repeatedly to the same destination address.

That is weird, since 0029 is a bunch of nops.

It's in a loop waiting for the LCD controller to return bit 7 clear.

Here's the Listing File of the bootloader so you don't need a disassembly.

Does it boot past that point?

0092 005E ;clear memory 0093 005E 21 00 80 ld hl,$8000 0094 0061 11 01 80 ld de,$8001 0095 0064 36 00 ld (hl),0 0096 0066 01 FF 7F ld bc,$7FFF 0097 0069 ED B0 ldir 0098 006B ;copy appended program 0099 006B 11 27 93 ld de,$9327 0100 006E 21 BB 00 ld hl,end 0101 0071 01 00 6C ld bc,$6C00 0102 0074 E...

My emulator had problems with ld bc,(nnnn) and ld (nnnn),bc having an incorrect address, and that made the TIOS (rightfully!) fail.
You may want to try the Bubble Bobble ROM to see if that works. (This is a TI83 OS, but the ports look like they should match up)

Execution in 6xxx is definitely normal, that's the switchable rom page.

nested tags?

Make sure you're using the Win32 console version of TASM, not the DOS version.