Mercurial > hg > Members > kono > os9 > sbc09

comparison os9/level2/boot.asm @ 37:7baffb867d70

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nitros9 level 1 worked
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 16 Jul 2018 11:22:28 +0900
parents 01519215ec70
children 52f7ad4c2ebb
comparison
equal deleted inserted replaced
36:cc8c2c2464fe 37:7baffb867d70
28 28
29 name fcs /Boot/ 29 name fcs /Boot/
30 fcb edition 30 fcb edition
31 31
32 start 32 start
33 lbra entry
34 lbra btdebg
35 entry
33 ldy #$40 extended rom page no. 36 ldy #$40 extended rom page no.
34 clra 37 clra
35 clrb 38 clrb
36 pshs d,x,y,u 39 pshs d,x,y,u
37 tfr d,x 40 tfr d,x
79 ldx #0 82 ldx #0
80 bra pagel 83 bra pagel
81 last clr $ffa0 84 last clr $ffa0
82 puls d,x,y,u,pc 85 puls d,x,y,u,pc
83 86
87 ** put lbsr btdebug on <$5e
88 btdebug anda #$7f
89 sta $ff81
90 rts
91
84 emod 92 emod
85 eom equ * 93 eom equ *
86 end 94 end