List of Official Cautions

This table lists the cautions which appear in the official Super Nintendo development manual.

Book 1

Chapter	Page Number	Caution Number	Description
24	2-24-1	1	Registers that must be accessed in the order of low and high twice
24	2-24-1	2	Period during which different kinds of memory can be accessed
24	2-24-1	3	address space size limitation for VRAM
24	2-24-1	4	VRAM address counter is incremented automatically
24	2-24-2	5	dummy VRAM read
24	2-24-2	6	top color data of palettes is transparent
24	2-24-2	7	sprites should not be positioned at x=100h
24	2-24-2	8	verify which accessories are connected to the controller ports
24	2-24-2	9	WRAM is indeterminate on power-on
24	2-24-2	10	avoid data loss in battery back-up SRAM
24	2-24-3	11	WRAM is lost gradually after power-off
24	2-24-3	12	corrupt input may be sent by the controller if it is unplugged
24	2-24-3	13	don't place critical game characters too close to the screen edge
24	2-24-3	14	switch out of 6502 emulation mode on reset or start-up
24	2-24-4	15	In FastROM, use a dummy jump to change the PBR
24	2-24-4	16	some controllers latch after disabling controller read
9	3-9-1	1	overflowing the dynamic range causes distortion noise
9	3-9-1	2	wait before enabling FLG.ECEN
9	3-9-2	3	procedure for writing echo data to ARAM
9	3-9-3	4	inappropriate echo parameters may lead to data loss or reverb
9	3-9-3	5	starting an echo before finishing echo param initialization may overwrite ARAM
9	3-9-3	6	excessive sound/data compression ration may distort output
9	3-9-3	7	sound designed for stereo may not sound good in mono
9	3-9-4	8	discontinuities in sample-waves may produce crackling noise
9	3-9-5	9	hang-up can occur if 5A22/SPC communication is interrupted
9	3-9-6	10	multiple ROMs in Game Pak can put too much load capacity on the data bus

Book 2

Chapter	Page Number	Caution Number	Description
3	1-3-4	1	SAS is incompatible with FastROM
3	1-3-4	2	max ROM/RAM sizes
3	1-3-4	3	5A22 and SA-1 share ROM memory map
3	1-3-4	4	data projected to backup RAM is specified separately
3	1-3-5	5	I-RAM is pre-assigned
7	4-7-2	1	when mouse_read is used, automatic read function must be on
7	4-7-2	2	don't call during automatic (hardware) read
7	4-7-2	3	use mouse_read and speed_change together
7	4-7-4	n/a	don't forget to set certain mouse registers
8	4-8-1	1	Data sent by mouse is inverted
8	4-8-1	2	constantly check mouse connection code in case it becomes unplugged
8	4-8-1	3	always set mouse speed after connecting it
8	4-8-1	4	be careful when using a standard controller and mouse at the same time
8	4-8-2	5	standard mouse BIOS is written entirely in 8-bit mode
8	4-8-2	6	refer to "Mouse Specifications" (page 4-6-7)
9	4-9-4	1	game should warn if the MultiPlayer 5 is connected to port 1
9	4-9-4	2	gameplay should continue if the MultiPlayer 5 becomes disconnected
9	4-9-4	3	Super Scope is incompatible with the MultiPlayer 5
9	4-9-4	4	mouse is incompatible with the multiplayer 5
9	4-9-4	5	use supplied multiplayer 5 bios
9	4-9-4	6	when multiplayer 5 is in 2P mode, programs can't see it
9	4-9-4	7	evaluate software with the MultiPlayer Development Assembly
9	4-6-5	8	be careful of order of BIOS call
10	4-10-4	1	if MultiPlayer5 is not connected, contents of con1~5 are invalid
10	4-10-4	2	don't call BIOS more than once per frame
10	4-10-4	3	Nintendo is not liable for problems caused by the BIOS
10	4-10-4	4	change BIOS end code when BIOS code changes
10	4-10-4	5	call MULTI5.ASM (X65) before calling M_CHECK.ASM (X65)