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1. Amiga Hardware Reference Manual

2. Custom Register Index

3. MOTOROLA M68000 FAMILY Programmer's Reference Manual

4. DMA Time Slot Allocation / Horizontal Line

Tricks

1. English Amiga Board - coders forum:

   • Asm / Hardware
   • Undocumented Amiga hardware stuff

2. Amiga Demoscene Archive Forum: coding

   • Atari style C2P

3. Subpixel line drawing using Blitter: part 1 and part 2.

MC68000 instruction timing

Taken from EAB post.

mnemonic	syntax	dy	ay	(ay)	(ay)+	-(ay)	(d,ay)	(d,ay,r)	(m).w	(m).l	(d,pc)	(d,pc,r)	#d	ccr	sr	usp
abcd.b	dx,<>	6
	-(ax),<>				18
add.bw	dx,<>	4		12	12	14	16	18	16	20
	<>,dx	4	4	8	8	10	12	14	12	16	12	14
add.l	dx,<>	8		20	20	22	24	26	24	28
	<>,dx	8	8	14	14	16	18	20	18	22	18	20
adda.w	<>,ax	8	8	12	12	14	16	18	16	20	16	18	12
adda.l	<>,ax	8	8	14	14	16	18	20	18	22	18	20	16
addi.bw	#d,<>	8		16	16	18	20	22	20	24
addi.l	#d,<>	16		28	28	30	32	34	32	36
addq.bw	#d,<>	4	8	12	12	14	16	18	16	20
addq.l	#d,<>	8	8	20	20	22	24	26	24	28
addx.bw	dx,<>	4
	-(ax),<>					18
addx.l	dx,<>	8
	-(ax),<>					30
and.bw	dx,<>	4		12	12	14	16	18	16	20
	<>,dx	4		8	8	10	12	14	12	16	12	14
and.l	dx,<>	8		20	20	22	24	26	24	28
	<>,dx	8		14	14	16	18	20	18	22	18	20
andi.bw	#d,<>	8		16	16	18	20	22	20	24				20	20
andi.l	#d,<>	16		28	28	30	32	34	32	36
		dy	ay	(ay)	(ay)+	-(ay)	(d,ay)	(d,ay,r)	(m).w	(m).l	(d,pc)	(d,pc,r)	#d	ccr	sr	usp
asl.bw	dx,<>	6+2n
asr.bw	#d,<>	6+2n
asl.l	dx,<>	8+2n
asr.l	#d,<>	8+2n
asl.w asr.w	<>			12	12	14	16	18	16	20
bcc.b	label	10/8 (taken/not taken)
bcc.w	label	10/12 (taken/not taken)
bra.bw	label	10
bsr.bw	label	18
bchg	dx,<>	6+x		12	12	14	16	18	16	20
	#d,<>	10+x		16	16	18	20	22	20	24
bclr	dx,<>	8+x		12	12	14	16	18	16	20
	#d,<>	12+x		16	16	18	20	22	20	24
bset	dx,<>	6+x		12	12	14	16	18	16	20
	#d,<>	10+x		16	16	18	20	22	20	24
		x = 0 if bit is lower than 16, 2 otherwise
btst	dx,<>	6		8	8	10	12	14	12	16	12	14
	#d,<>	10		12	12	14	16	18	16	20	16	18
chk	<>,dx	10+x		14+x	14+x	16+x	18+x	20+x	18+x	22+x	18+x	20+x	14+x
		x = 30 if trap taken
clr.bw	<>	4		12	12	14	16	18	16	20
clr.l	<>	6		20	20	22	24	26	24	28
		dy	ay	(ay)	(ay)+	-(ay)	(d,ay)	(d,ay,r)	(m).w	(m).l	(d,pc)	(d,pc,r)	#d	ccr	sr	usp
cmp.bw	<>,dx	4	4	8	8	10	12	14	12	16	12	14
cmp.l	<>,dx	6	6	14	14	16	18	20	18	22	18	20
cmpa.w	<>,ax	6	6	10	10	12	14	16	14	18	14	16	10
cmpa.l	<>,ax	6	6	14	14	16	18	20	18	22	18	20	14
cmpi.w	#d,<>	8		12	12	14	16	18	16	20
cmpi.l	#d,<>	14		20	20	22	24	26	24	28
cmpm.bw	(ax)+,<>				12
cmpm.l	(ax)+,<>				20
dbcc	dx,label	10/12/14 (taken/cc true/not taken)
divs.w divu.w	<>,dx	0+x		4+x	4+x	6+x	8+x	10+x	8+x	12+x	8+x	10+x	4+x
		x = 140-158 (less than 10% difference between the best and worst case)
eor.bw	dx,<>	4		12	12	14	16	18	16	20
eor.l	dx,<>	8		20	20	22	24	26	24	28
eori.bw	#d,<>	8		16	16	18	20	22	20	24				20	20
eori.l	#d,<>	16		28	28	30	32	34	32	36
exg	<>,<>	6	6
ext.wl	<>	4
illegal		34
		dy	ay	(ay)	(ay)+	-(ay)	(d,ay)	(d,ay,r)	(m).w	(m).l	(d,pc)	(d,pc,r)	#d	ccr	sr	usp
jmp	<>			8			10	14	10	12	10	14
jsr	<>			16			18	22	18	20	18	22
lea	<>,ax			4			8	12	8	12	8	12
link	<>,#d		16
lsl.bw	dx,<>	6+2n
lsr.bw	#d,<>	6+2n
lsl.l	dx,<>	8+2n
lsr.l	#d,<>	8+2n
lsl.w lsr.w	<>			12	12	14	16	18	16	20
move.bw	dx,<>	4		8	8	8	12	14	12	16				12	12
	ax,<>	4		8	8	8	12	14	12	16
	(ax),<>	8		12	12	12	16	18	16	20				16	16
	(ax)+,<>	8		12	12	12	16	18	16	20				16	16
	-(ax),<>	10		14	14	14	18	20	18	22				18	18
	(d,ax),<>	12		16	16	16	20	22	20	24				20	20
	(d,ax,r),<>	14		18	18	18	22	24	22	26				22	22
	(m).w,<>	12		16	16	16	20	22	20	24				20	20
	(m).l,<>	16		20	20	20	24	26	24	28				24	24
	(d,pc),<>	12		16	16	16	20	22	20	24				20	20
	(d,pc,r),<>	14		18	18	18	22	24	22	26				22	22
	#d,<>	8		12	12	12	16	18	16	20				16	16
	ccr/sr,<>	6		12	12	14	16	18	16	20
		dy	ay	(ay)	(ay)+	-(ay)	(d,ay)	(d,ay,r)	(m).w	(m).l	(d,pc)	(d,pc,r)	#d	ccr	sr	usp
move.l	dx,<>	4		12	12	12	16	18	16	20
	ax,<>	4		12	12	12	16	18	16	20						4
	(ax),<>	12		20	20	20	24	26	24	28
	(ax)+,<>	12		20	20	20	24	26	24	28
	-(ax),<>	14		22	22	22	26	28	26	30
	(d,ax),<>	16		24	24	24	28	30	28	32
	(d,ax,r),<>	18		26	26	26	30	32	30	34
	(m).w,<>	16		24	24	24	28	30	28	32
	(m).l,<>	20		28	28	28	32	34	32	36
	(d,pc),<>	16		24	24	24	28	30	28	32
	(d,pc,r),<>	18		26	26	26	30	32	30	34
	#d,<>	12		20	20	20	24	26	24	28
	usp,<>		4
movea.w	<>,ax	4	4	8	8	10	12	14	12	16	12	14	8
movea.l	<>,ax	4	4	12	12	14	16	18	16	20	16	18	12
movem.w	list,<>			8+4n		8+4n	12+4n	14+4n	12+4n	16+4n
	<>,list			12+4n	12+4n		16+4n	18+4n	16+4n	20+4n	18+4n	18+4n
movem.l	list,<>			8+8n		8+8n	12+8n	14+8n	12+8n	16+8n
	<>,list			12+8n	12+8n		16+8n	18+8n	16+8n	20+8n	18+8n	18+8n
movep.w	dx,<>						16
	(d,ax),<>	16
movep.l	dx,<>						24
	(d,ax),<>	24
moveq	#d,<>	4
muls.w mulu.w	<>,dx	0+x		4+x	4+x	6+x	8+x	10+x	8+x	12+x	8+x	10+x	4+x
		x = 38+2n (s: the number of 10 or 01 pairs in <>0, u: the number of 1s in <>)
		dy	ay	(ay)	(ay)+	-(ay)	(d,ay)	(d,ay,r)	(m).w	(m).l	(d,pc)	(d,pc,r)	#d	ccr	sr	usp
nbcd.b	<>	6		12	12	14	16	18	16	20
neg.bw	<>	4		12	12	14	16	18	16	20
neg.l	<>	6		20	20	22	24	26	24	28
negx.bw	<>	4		12	12	14	16	18	16	20
negx.l	<>	6		20	20	22	24	26	24	28
nop		4
not.bw	<>	4		12	12	14	16	18	16	20
not.l	<>	6		20	20	22	24	26	24	28
or.bw	dx,<>	4		12	12	14	16	18	16	20
	<>,dx	4		8	8	10	12	14	12	16	12	14
or.l	dx,<>	8		20	20	22	24	26	24	28
	<>,dx	8		14	14	16	18	20	18	22	18	20
ori.bw	#d,<>	8		16	16	18	20	22	20	24				20	20
ori.l	#d,<>	16		28	28	30	32	34	32	36
pea	<>			12			16	20	16	20	16	20
reset		132
		dy	ay	(ay)	(ay)+	-(ay)	(d,ay)	(d,ay,r)	(m).w	(m).l	(d,pc)	(d,pc,r)	#d	ccr	sr	usp
rol.bw	dx,<>	6+2n
ror.bw	#d,<>	6+2n
rol.l	dx,<>	8+2n
ror.l	#d,<>	8+2n
rol.w ror.w	<>			12	12	14	16	18	16	20
roxl.bw	dx,<>	6+2n
roxr.bw	#d,<>	6+2n
roxl.l	dx,<>	8+2n
roxr.l	#d,<>	8+2n
roxl.w roxr.w	<>			12	12	14	16	18	16	20
rte		20
rtr		20
rts		16
sbcd.b	dx,<>	6
	-(ax),<>					18
scc	<>	4+x		12	12	14	16	18	16	20
		x=2 if cc is true
stop	#d	4
		dy	ay	(ay)	(ay)+	-(ay)	(d,ay)	(d,ay,r)	(m).w	(m).l	(d,pc)	(d,pc,r)	#d	ccr	sr	usp
sub.bw	dx,<>	4		12	12	14	16	18	16	20
	<>,dx	4	4	8	8	10	12	14	12	16	12	14
sub.l	dx,<>	8		20	20	22	24	26	24	28
	<>,dx	8	8	14	14	16	18	20	18	22	18	20
suba.w	<>,ax	8	8	12	12	14	16	18	16	20	16	18	12
suba.l	<>,ax	8	8	14	14	16	18	20	18	22	18	20	16
subi.bw	#d,<>	8		16	16	18	20	22	20	24
subi.l	#d,<>	16		28	28	30	32	34	32	36
subq.bw	#d,<>	4	8	12	12	14	16	18	16	20
subq.l	#d,<>	8	8	20	20	22	24	26	24	28
subx.bw	dx,<>	4
	-(ax),<>					18
subx.l	dx,<>	8
	-(ax),<>					30
swap	dx	4
tas	<>	4		14	14	16	18	20	18	22
trap	#d	38
trapv		34/4 (taken, not taken)
tst.bw	<>	4		8	8	10	12	14	12	16
tst.l	<>	4		12	12	14	16	18	16	20
unlk	<>		12
		dy	ay	(ay)	(ay)+	-(ay)	(d,ay)	(d,ay,r)	(m).w	(m).l	(d,pc)	(d,pc,r)	#d	ccr	sr	usp