diff options
Diffstat (limited to 'pc-thing/code/calc.a')
| -rw-r--r-- | pc-thing/code/calc.a | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/pc-thing/code/calc.a b/pc-thing/code/calc.a deleted file mode 100644 index 2aa1b02..0000000 --- a/pc-thing/code/calc.a +++ /dev/null @@ -1,74 +0,0 @@ -.label len 1 - -jmp start -read_input: - mov a 0 - mov b 0 - mov c 64 - sys - mov b 1 - sub - str c len - ret - -str_to_num: - ; pointer to current character - .label ptr 2 - ld a len - mov b 63 - add - str c ptr - .label mult 3 - mov a 1 - str a mult - .label num 4 - mov a 0 - str a num - .label zero 48 - stm_loop: - ;load char, subtract zero, multiply by 10 - ld b ptr - ldr a b - mov b zero - sub - swp c a - ld b mult - mul - - ; add to num - swp c b - ld a num - add - str c num - - ld a mult - mov b 10 - mul - str c mult - - ; move pointer - ld a ptr - mov b 1 - sub - str c ptr - cmp c 63 - jz stm_loop - ret - -start: - jmr read_input - jmr str_to_num - ld a 4 - str a 8 ; store number 1 to 8 - jmr read_input - jmr str_to_num - ld a 4 ; load number from read - ld b 8 - add - str c 16 ; put our number into 16 - #using printer.a - jmr print_num ; print number at 16 (well not print but stringify) - mov a 1 ; write - mov b 1 ; stdout - mov c 32 ; address - sys ; syscall \ No newline at end of file |