/
pad.s
133 lines (132 loc) · 1.61 KB
/
pad.s
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SUB SP, 4 ; Alloc space on stack
:begin
SET A, 0x1
SET [0xfffc], A
SET A, 0x4
SET [0xfffe], A
SET A, [0xfffc]
SET PUSH, A
SET A, 0x1
SET B, POP
SET C, 1
IFE A, B
SET C, 0
IFN C, 0
SET PC, l0
SET A, 0x20
SET [0xffff], A
SET PC, l1
:l0
SET A, 0x9
SET [0xffff], A
:l1
SET A, 0x1
SET [0xfffd], A
:l2
SET A, [0xfffe]
SET PUSH, A
SET A, 0x1
SET B, POP
SET C, 1
IFG B, A
SET C, 0
IFN C, 0
SET PC, l3
SET A, [0xfffe]
SET PUSH, A
SET A, 0x1
SUB A, POP
SET PUSH, A
SET A, 0
SUB A, POP
SET [0xfffe], A
SET A, [0xfffd]
SET PUSH, A
SET A, 0xa
MUL A, POP
SET [0xfffd], A
SET PC, l2
:l3
SET A, [0xffff]
SET [0xfffe], A
:l4
SET A, [0xfffe]
SET PUSH, A
SET A, [0xfffd]
SET B, POP
SET C, 1
IFG A, B
SET C, 0
IFN C, 0
SET PC, l5
SET A, [0xfffe]
SET PUSH, A
SET A, 0xa
MUL A, POP
SET [0xfffe], A
SET A, 0x0
JSR print
JSR printnl
SET PC, l4
:l5
SET A, [0xffff]
JSR print
JSR printnl
SET PC, crash
; compiled functions
:printchar
SET B, X
ADD B, 0x8000
BOR A, Y
SET [B], A
ADD X, 1
IFN X, 0x160
SET PC, pnline
SET X, 0
:pnline
SET PC, POP
:printint
SET I, 0
:printint1
SET B, A
MOD A, 0xa
ADD A, 0x30
SET PUSH, A
SET A, B
DIV A, 0xa
ADD I, 1
IFN A, 0
SET PC, printint1
:printint2
SET A, POP
JSR printchar
SUB I, 1
IFN I, 0
SET PC, printint2
SET A, POP
SET PC, POP
:printstr
AND A, 0x7fff
SET I, A
:printstr1
IFE [I], 0
SET PC, POP
SET A, [I]
JSR printchar
ADD I, 1
SET PC, printstr1
:printnl
DIV X, 32
ADD X, 1
MUL X, 32
SET PC, POP
:print
SET B, A
SHR B, 15
IFE B, 0
JSR printint
IFE B, 1
JSR printstr
SET PC, POP
:crash
SET PC, crash