COMMON/common/page6.src

#include "rom.h"
#include "macros.h"

	* = $600

HDR(DEMO)
	CMN
	SET(R0, 1/1024)
	SET(R1, -1/1024)
	ADD(R2, R0, R1)
	SUB(R3, R0, R1)
	ESC
	BRK

BGN(FACTORIAL)
	SET(R1, $10.4456)
	SET(R2, 1)
	HEX(R1)
	MOD(R3, R1, R2)
	SUB(R1, R1, R3)
_1	TST(R1)
	BRZ(_2)
	MUL(R2, R2, R1)
	DEC(R1)
	BRA(_1)
_2	EXT(S0)
	RTN
END(FACTORIAL)

END(DEMO)
Add files via upload 2018-08-07 02:14:36 +00:00			`#include "rom.h"`
			`#include "macros.h"`

			`* = $600`

			`HDR(DEMO)`
			`CMN`
Added ADD and SUB instructions. Also uncovered an issue with how negative numbers were represented. 2018-08-14 01:01:18 +00:00			`SET(R0, 1/1024)`
			`SET(R1, -1/1024)`
			`ADD(R2, R0, R1)`
			`SUB(R3, R0, R1)`
Add files via upload 2018-08-07 02:14:36 +00:00			`ESC`
			`BRK`

			`BGN(FACTORIAL)`
			`SET(R1, $10.4456)`
			`SET(R2, 1)`
			`HEX(R1)`
			`MOD(R3, R1, R2)`
			`SUB(R1, R1, R3)`
			`_1 TST(R1)`
			`BRZ(_2)`
			`MUL(R2, R2, R1)`
			`DEC(R1)`
			`BRA(_1)`
			`_2 EXT(S0)`
			`RTN`
			`END(FACTORIAL)`

			`END(DEMO)`