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comparison os9/level2/boot.asm @ 30:7b1b25ff010a

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disk io for mmu
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Thu, 12 Jul 2018 06:25:25 +0900
parents 3c14d647bb51
children 01519215ec70
comparison
equal deleted inserted replaced
29:3c14d647bb51 30:7b1b25ff010a
41 bcs last 41 bcs last
42 addb #$ff 42 addb #$ff
43 adca #0 43 adca #0
44 clrb 44 clrb
45 std ,s size return as d 45 std ,s size return as d
46 ** OS9 lv2 use $a000-$dfff as a temporary page
47 ** demand at least that size ( ROM start at $ed00 )
48 cmpa #$ed-$a0
49 bhi ok
50 lda #$ed-$a0
51 ok
46 os9 F$BtMem 52 os9 F$BtMem
47 bcs last 53 bcs last
48 ** u points the memory 54 ** u points the memory
49 stu 2,s return as x 55 stu 2,s return as x
50 ldd ,s 56 ldd ,s