Mega CD Outline
Title Page
Table of Contents
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I	Explanation of Terms	page 2, 3
II	Hardware Specifications	page 4
	(1)    Mega-CD	page 4
	(2)    Genesis	page 4
III	Internal Configuration	page 5
	(1)    Configuration Diagram	page 5
	(2-1)    Genesis	page 5
	(2-2)    Mega-CD	page 6
	(3)    Using the 6 Megabit Buffer	page 7
	(3-1)    PRG-RAM (4M)	page 7
	(3-2)    Word RAM (2M)	page 7
	(3-2-1)    2 M Mode	page 7
	(3-2-2)    1 M/1 M Mode	page 8
IV	Detailed Description of Functions	page 9
	(1)    Twin CPUs	page 9
	(2)    Graphical Numeric Processing Functions	page 10
	(2-1)    Coordinate Conversion Function	page 10
	(2-1-1)    Basic Principle	page 10
	(2-1-2)    Rotation	page 11
	(2-1-3)    Enlargement/Reduction	page 12
	(2-1-4)    3-D Effect	page 12
	(2-2)    Full Graphics Function	page 12
	(2-3)    Important Points About Both Functions	page 13
	(3)    Audio Functions	page 14
	(3-1)    CD-DA	page 14
	(3-2)    8-channel Stereo PCM Sound Source	page 14 , 15
	(3-3)    8-times Oversampling Digital Filter	page 16
	(3-4)    Fade-In/Out	page 16
	(4)    Appendices	page 17
	(4-1)    Moving Picture Processing Capability	page 17
	(4-2)    Sound	page 17 , 18
	(4-3)    Access Time	page 19
	(4-4)    CD-G Compatibility	page 19

Mega CD Hardware Manual: The Hardware
Title Page
Table of Contents - page 1
Table of Contents - page 2
Table of Contents - page 3
Mega-CD Diagram    Mega-CD Diagram (horizontal)
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Terms Used In This Manual	page 1, 2, 3
Outline Of Mega-CD Hardware - page missing	page 4
Mega-CD Construction	page 5
Bus Contruction Of CD-ROM Interior	page 6, 7, 8 , 9, 10, 11
Mega-CD Hardware Specifications	page 12

1	Mapping	page 12
	1-1 Mapping Mode	page 12. 13
	1-2 Sub-CPU Mapping	page 14, 15
	1-3 Main-CPU Mapping	page 16, 17, 18
2	Mega-CD Register Table	page 19, 20, 21
3	Sub-CPU Registers	page 22
	3-1 Initialization	page 22, 23, 24 , 25
	3-2 CDC	page 26, 27
	3-3 Communication	page 28, 29
	3-4 General Purpose Timer	page 30
	3-5 Interrupt	page 30
	3-6 CDD	page 31, 32, 33
	3-7 Color Numeric Operation	page 34
	3-8 Rotation Scaling	page 35, 36, 37 , 38, 39, 40, 41 , 42, 43,
		44, 46, 47, 48, 49 , 50, 51, 52, 53 , 54
	3-9 Sub-Code	page 55
4	Main-CPU Registers	page 56
	4-1 Initialization	page 56, 57
	4-2 CDC	page 58, 59
	4-3 Communication	page 59, 60
	Supplements	page 61, 62, 63

Mega CD Hardware Manual: PCM Sound Source
Title Page
Table of Contents
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1	Overview Of The Product	page 1
2	Block Diagram	page 2, (horizontal)
3	Description Of Pins	page 3, 4, 5
4	Description Of Functions	page 6
	4-1 Address Map	page 6
	4-2 Control Register	page 7, 8
	4-3 Internal Memory	page 9, 10
	4-4 Channel On/Off Register	page 10
	4-5 Microcomputer Interface IC	page 11
	4-6 Wave Memory Interface IC	page 11
	4-7 Internal Register Read Cycle	page 12
	4-8 DCA (Digital Control Amplifier)	page 13
	4-9 Wave Data Format	page 14
5	DC Electrical Specifications	page 15
6	AC Electrical Specifications	page 16, 17
7	Timing Chart	page 18
	7-1 Pseudo SRAM I/F	page 18
	7-2 Mask ROM I/F	page 18
	7-3 CPU I/F	page 19
	7-4 CPU Interface	page 20, 21
	7-5 Pseudo SRAM I/F	page 22

Mega CD Software Development Manual
Title Page
Diagram   Diagram (horizontal)
Index
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1	Mapping	page 1, 2
2	Main CPU Mapping	page 3, 4
3	Sub-CPU Mapping	page 5, 6
4	Mega-CD Register Table	page 7, 8
5	Sub-CPU Registers	page 9, 10, 11
6	CDC	page 12, 13
7	Communication	page 14
8	General Use Timer	page 15
9	Interrupts	page 15
10	CDD	page 16, 17
11	Color Calculation	page 18
12	Rotation Compression	page 19, 20, 21 , 22, 23, 24, 25 , 26, 27, 28, 29 , 30, 31
13	Subcodes	page 32
14	Main-CPU	page 33
15	CDC	page 34
16	Communication	page 35, 36

Mega-CD Disc Format Specifications
Title Page
Table of Contents
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1	Overview Of The Mega-CD Disc Format	page 1
2	Physical Format	page 2
	2-1 Partition and Configuration of Disc Areas	page 2
	2-2 Configuration of Tracks	page 2, 3, 4
3	Logical Format	page 5
	3-1 Sector Structure	page 5
	3-2 System Area	page 6
	3-3 Booting System	page 7
	3-4 File System	page 8, 9, 10 , 11, 12, 13, 14
	3-5 User File Table	page 15
	3-6 Others	page 15

Appendix 1    Glossary	page 16, 17
Appendix 2    System ID	page 18, 19
Appendix 3    Disc ID	page 20, 21
Appendix 4    Area for defining Japanese codes	page 22

Mega-CD Bios Manual

Title Page
Table of Contents
*

1	CD System Control Process Summary	page 1
	1-1 Hardware Summary	page 1
	1-2 Process Summary	page 2
	1-3 CD System Control Chart	page 3
	1-4 CD System Memory Map	page 4
2	BIOS Call Summary	page 5
	2-1 BIOS Call Functions	page 5, 6
	2-2 BIOS Call List	page 7, 8
	2-3 BIOS Call Type Chart	page 9
	2-4 Drive Control System Process Chart	page 10
3	BIOS Call Reference	page 11
	3-D Drive (Mechanism)	page 12
	3-M CD-DA (Music)	page 13, 14, 15 , 16, 17
	3-R CD-ROM (Data)	page 18, 19
	3-B CD-BIOS (Other Functions)	page 20, 21, 22
	3-F FADER (Fader)	page 23
	3-C CDC (Decoder)	page 24, 25
	3-S SCD (Subcode)	page 26, 27, 28
	3-L LED (LED Display)	page 29
4	System Bootstrap Sequence	page 30
	4-1 CD Boot System Mode 1 (Boot from cartridge)	page 30
	4-2 CD Boot System Mode 2 (Boot from CD-DISC)	page 30
	4-3 Booting Application Programs	page 31, 32
5	Jump Table And User Calls	page 33
	5-1 Structure of the Jump Table	page 33
	5-2 BIOS Call Sequence	page 33
	5-3 User Call Sequence	page 34
	5-4 Exception Processing Sequence	page 35
6	Boot System	page 36
	6-1 CD-Boot	page 36, 37
7	Back-Up RAM	page 38
	7-1 Back-up RAM	page 38, 39, 40, 41, 42, 43, 44, 45

Mega-CD Tech Bulletins
*

Mega-CD Tech Bulletin #1	page 1, 2, 3 , 4, 5
Mega-CD Tech Bulletin #19	page 1
Mega-CD Tech Bulletin #20	page 1, 2
Mega-CD BIOS Tech Bulletin	page 1, 2

Cinepak Tech Bulletins
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Cinepak Tech Bulletin #01	page 1
Cinepak Tech Bulletin #02	page 1

Addendum
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Addendum 1	page 1
Addendum 3	page 1, 2, 3 , 4, 5
Addendum 4	page 1

Software Standards
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Software Standards

page 1, 2, 3 , 4, 5, 6 , 7, 8, 9

Misc
*

Manual Correction	page 1
Software Guidelines	page 1, 2
Technical Memo #4	page 1, 2
Misc FAX	page 1