From cccb99226d3951fd9dfe1c4cf1c43126a1309d51 Mon Sep 17 00:00:00 2001 From: WlodekM Date: Mon, 31 Mar 2025 19:47:54 +0300 Subject: move to pc-thing/ --- code/bootloader.a | 109 ------------------------------------------------------ 1 file changed, 109 deletions(-) delete mode 100644 code/bootloader.a (limited to 'code/bootloader.a') diff --git a/code/bootloader.a b/code/bootloader.a deleted file mode 100644 index 66a221c..0000000 --- a/code/bootloader.a +++ /dev/null @@ -1,109 +0,0 @@ -.offset 0x6000 ; bootloader is in 0x6000, copied there by another script -start: - mov a 0 - str a [gottenNZ] - ; currSector -> A - mov a [currSector] - ld a a - str a 0x7cff - - mov b 512 - mul - str c [sectorOffset] - - mov a 0 - str a [bytePointer] - - mov a 0 - str a [ptrThing] - - copySector: - mov a [sectorOffset] - ld a a - mov b [bytePointer] - ld b b - add c a b - ; - swp a c - mov b 0x8000 ; default code position - add c a b - str c [targetPointer] - - ; ld a [sectorOffset] - mov a 0x7d00 - ; add - ; swp c a - mov b [ptrThing] - ld b b - add c a b - mov b [targetPointer] - ld b b - ; swp c b - ; a <- $b - ld a b - push a ; push b - ld a c - ; push c ; push c - str b a ; $b <- c - pop a - ; $c <- b - str c a - ; swpm c b - - ld a c - mov b 0 - cmr a a b - mov b 1 - xor c a b - swp a c - mov b [gottenNZ] - ld b b - or c a b - mov a [gottenNZ] - str c a - - ;continue loop - ; pointer to 8xxx - mov a [ptrThing] - ld a a - mov b 1 - add c a b - mov a [ptrThing] - str c a - - ; pointer offset for sector thing - mov a [bytePointer] - ld a a - mov b 1 - add - str c [bytePointer] - - ; offset == 513 - cmp c 513 - jz copySector - ; continue main loop - mov a [currSector] - ld a a - mov b 1 - add c a b - mov a [currSector] - str c a - mov a [gottenNZ] - ld a a - cmp a 0 - jz start - ;escaped - jmp 0x8001 - -ptrThing: -.hex 0 -currSector: -.hex 0 -sectorOffset: -.hex 0 -bytePointer: -.hex 0 -gottenNZ: -.hex 0 -targetPointer: -.hex 0 \ No newline at end of file -- cgit 1.4.1-2-gfad0