jmp _main _setPixel_int_x__int_y__int_c:; int setPixel(int x, int y, int c) pop V0 ; preserve function return address pop [$71FF] ; param int x pop [$7201] ; param int y pop [$7203] ; param int c push V0 ; restore function return address mov $402F, [$7205] ; int screenStart = $402F push [$7201] ; left operand mov 128, V1 ; right operand pop V0 ; get left operand back mul V0, V1 ; compute multiplication push AX ; left operand mov [$71FF], V1 ; right operand pop V0 ; get left operand back add V0, V1 ; compute addition mov AX, [$7207] ; int i = AX push [$7205] ; store index obj mov [$7207], V1 ; store indexer pop V0 ; restore index obj mul V1, 1 ; multiply indexer by 1 add AX, V0 ; add indexer and index obj mov AX, V0 ; move to general purpose register movb [$7203], [V0] ; [V0] = [$7203] mov 0, V0 ; fallback return 0 ret _setPixel_int_i__int_c: ; int setPixel(int i, int c) pop V0 ; preserve function return address pop [$7209] ; param int i pop [$720B] ; param int c push V0 ; restore function return address mov $402F, [$720D] ; int screenStart = $402F push [$720D] ; store index obj mov [$7209], V1 ; store indexer pop V0 ; restore index obj mul V1, 1 ; multiply indexer by 1 add AX, V0 ; add indexer and index obj mov AX, V0 ; move to general purpose register movb [$720B], [V0] ; [V0] = [$720B] mov 0, V0 ; fallback return 0 ret _clear_int_c: ; int clear(int c) pop V0 ; preserve function return address pop [$720F] ; param int c push V0 ; restore function return address mov $402F, [$7211] ; int screenStart = $402F mov 0, [$7213] ; int i = 0 _body_1: push [$7213] ; left operand push 128 ; left operand mov 64, V1 ; right operand pop V0 ; get left operand back mul V0, V1 ; compute multiplication mov AX, V1 ; right operand pop V0 ; get left operand back lt V0, V1 ; compute less than check not LX bz jmp _end_2 ; if for condition fails, jump to end push [$7211] ; store index obj mov [$7213], V1 ; store indexer pop V0 ; restore index obj mul V1, 1 ; multiply indexer by 1 add AX, V0 ; add indexer and index obj mov AX, V0 ; move to general purpose register movb [$720F], [V0] ; [V0] = [$720F] push [$7213] ; i++ inc [$7213] pop V0 jmp _body_1 _end_2: mov 0, V0 ; fallback return 0 ret _getKeyState_int_scanCode: ; int getKeyState(int scanCode) pop V0 ; preserve function return address pop [$7215] ; param int scanCode push V0 ; restore function return address mov $6033, [$7217] ; int hid = $6033 push [$7215] ; left operand mov 8, V1 ; right operand pop V0 ; get left operand back div V0, V1 ; compute division mov AX, [$7219] ; int index = AX push [$7215] ; left operand mov 8, V1 ; right operand pop V0 ; get left operand back mod V0, V1 ; compute modulus mov AX, [$721B] ; int bit = AX push [$7217] ; store index obj push [$7219] ; left operand mov 1, V1 ; right operand pop V0 ; get left operand back sub V0, V1 ; compute subtraction mov AX, V1 ; store indexer pop V0 ; restore index obj mul V1, 1 ; multiply indexer by 1 add AX, V0 ; add indexer and index obj mov AX, V0 ; move to general purpose register mov [V0], [$721D] ; int val = [V0] push [$721D] ; left operand push 1 ; left operand mov [$721B], V1 ; right operand pop V0 ; get left operand back shl V0, V1 ; compute left shift mov DX, V1 ; right operand pop V0 ; get left operand back and V0, V1 ; compute and push DX ; left operand mov 0, V1 ; right operand pop V0 ; get left operand back cmp V0, V1 ; compute inequality check not mov LX, V0 ; return value ret mov 0, V0 ; fallback return 0 ret _getPressedKey: ; int getPressedKey() mov 0, [$721F] ; int sk = 0 _body_3: push [$721F] ; left operand mov 256, V1 ; right operand pop V0 ; get left operand back lt V0, V1 ; compute less than check not LX bz jmp _end_4 ; if for condition fails, jump to end push [$721F] ; arg int scanCode call _getKeyState_int_scanCode; int getKeyState(int scanCode) cmp V0, 0 ; logical and not bz jmp _clause_5 mov 0, V0 ; first operand failed, store 0 and skip second jmp _end_6 _clause_5: push [$721F] ; left operand mov 160, V1 ; right operand pop V0 ; get left operand back cmp V0, V1 ; compute inequality check not cmp LX, 0 ; compare result from second operand to 0 not mov LX, V0 ; store second operand result _end_6: not V0 bz ; check if condition jmp _end_7 ; if succeeds, continue, else jump to end mov [$721F], V0 ; return value ret _end_7: push [$721F] ; i++ inc [$721F] pop V0 jmp _body_3 _end_4: mov 0, V0 ; return value ret mov 0, V0 ; fallback return 0 ret _readKey: ; int readKey() _body_8: not 1 bz jmp _end_9 ; if while condition fails, jump to end call _getPressedKey ; int getPressedKey() mov V0, [$7221] ; int sk = V0 push [$7221] ; left operand mov 0, V1 ; right operand pop V0 ; get left operand back cmp V0, V1 ; compute inequality check not not LX bz ; check if condition jmp _end_10 ; if succeeds, continue, else jump to end mov [$7221], V0 ; return value ret _end_10: jmp _body_8 _end_9: mov 0, V0 ; fallback return 0 ret _getMouseIndex: ; int getMouseIndex() mov $602F, V0 ; move pointer into register for dereference mov [V0], V0 ; return value ret mov 0, V0 ; fallback return 0 ret _getMouseState: ; int getMouseState() push $602F ; left operand mov 2, V1 ; right operand pop V0 ; get left operand back add V0, V1 ; compute addition mov AX, V0 ; move pointer into register for dereference mov [V0], V0 ; return value ret mov 0, V0 ; fallback return 0 ret _main: ; int main() mov 0, [$7223] ; int color = 0 _body_11: not 1 bz jmp _end_12 ; if while condition fails, jump to end call _getMouseIndex ; int getMouseIndex() mov V0, [$7225] ; int mouseIndex = V0 call _getMouseState ; int getMouseState() mov V0, [$7227] ; int mouseState = V0 push [$7227] ; left operand mov 1, V1 ; right operand pop V0 ; get left operand back and V0, V1 ; compute and not DX bz ; check if condition jmp _end_13 ; if succeeds, continue, else jump to end push [$7223] ; left operand mov 3, V1 ; right operand pop V0 ; get left operand back mod V0, V1 ; compute modulus push AX ; left operand mov 1, V1 ; right operand pop V0 ; get left operand back add V0, V1 ; compute addition push AX ; arg int i push [$7225] ; arg int c call _setPixel_int_i__int_c; int setPixel(int i, int c) _end_13: push 67 ; arg int scanCode call _getKeyState_int_scanCode; int getKeyState(int scanCode) not V0 bz ; check if condition jmp _end_14 ; if succeeds, continue, else jump to end push 8 ; arg int c call _clear_int_c ; int clear(int c) _end_14: push 65 ; arg int scanCode call _getKeyState_int_scanCode; int getKeyState(int scanCode) not V0 bz ; check if condition jmp _end_15 ; if succeeds, continue, else jump to end push [$7223] ; i++ inc [$7223] pop V0 _body_16: push 65 ; arg int scanCode call _getKeyState_int_scanCode; int getKeyState(int scanCode) not V0 bz jmp _end_17 ; if while condition fails, jump to end jmp _body_16 _end_17: _end_15: jmp _body_11 _end_12: mov 0, V0 ; fallback return 0 ret