Table of Contents: | Genesis Software | Genesis Technical Bulletins
| Genesis Sound |
|  | Addendum
|  | Software Standards
|  | Misc

Genesis Software Manual
Title Page
Genesis Technical Overview - page 1
Genesis Technical Overview - page 2
Genesis Technical Overview - page 3
Table of Contents - page 1
Table of Contents - page 2
Table of Contents - page 3
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I | Memory Map | page 1
| A Mega Drive 16-bit Mode | page 1
| 1 68K Memory Map | page 1
| 2 Z80 Memory Map | page 2
| 3 68000 Access to Z80 Memory | page 2
| 4 I/O Area | page 3
| 5 Control Area | page 3
| 6 VDP Area | page 4
II | VDP 315-5313 | page 5
| A Terminology | page 6
| B Display Specification | page 6, 7
| C VDP Structure | page 8
| 1 CTRL | page 8
| 2 VRAM | page 8
| 3 CRAM | page 8
| 4 VSRAM | page 8
| 5 DMA | page 8
| D Interrupt | page 9
| 1 Vertical Interrupt (V-INT) | page 9
| 2 Horizontal Interrupt (H-INT) | page 9
| 3 External Interrupt (EX-INT) | page 10
| E VDP Port | page 10
| 1 $C00000 (Data Port) | page 10
| 2 $C00004 (Control Port) | page 11
| 3 $C00008 (HV Counter) | page 12
| F VDP Register | page 13
| 1 Mode Set Register No. 1 | page 13
| 2 Mode Set Register No. 2 | page 13
| 3 Pattern Name Table Base Address for Scroll A | page 13
| 4 Pattern Name Table Base Address for Window | page 13
| 5 Pattern Name Table Base Address for Scroll B | page 14
| 6 Sprite Attribute Table Base Address | page 14
| 7 Background Color | page 14
| 8 H Interrupt Register | page 14
| 9 Mode Set Register No. 3 | page 15
| 10 Mode Set Register No. 4 | page 15
| 11 H Scroll Data Table Base Address | page 16
| 12 Auto Increment Table | page 16
| 13 Scroll Size | page 16
| 14 Window H Position | page 16
| 15 Window V Position | page 17
| 16 DMA Length Counter Low | page 17
| 17 DMA Length Counter High | page 17
| 18 DMA Source Address Low | page 17
| 19 DMA Source Address Mid | page 17
| 20 DMA Source Address High | page 17
| G Access VDP RAM | page 18
| 1 RAM Address Setting | page 18
| 2 VRAM Access | page 19, 20, 21
| 3 CRAM Access | page 22
| 4 VSRAM Access | page 23
| 5 Access Timing | page 24
| 6 HV Counter | page 25
| H Access DMA Transfer | page 26
| 1 Memory To VRAM | page 26, 27
| 2 VRAM Fill | page 28, 29, 30
| 3 VRAN Copy | page 31, 32, 33
| 4 DMA Transfer Capacity | page 34
| I Scrolling Screen | page 35, 36
| 1 Scrolling Screen Size | page 37, 38
| 2 Horizontal Scrolling | page 39, 40
| 3 Vertical Scrolling | page 41
| 4 Scroll Patter Name | page 42, 43
| 5 Pattern Generator | page 44, 45
| J Window | page 46
| 1 Display Position | page 46, 47 , 48, 49
| 2 Window Priority | page 50
| 3 Window Pattern Name | page 51
| K Access Sprite | page 52
| 1 Display Position | page 53, 54
| 2 Sprite Attribute | page 55
| 3 Sprite Size | page 56
| 4 Sprite Display Capacity | page 57
| 5 Priority Between Sprites | page 58, 59
| 6 Sprite Pattern Generator | page 60
| L Priority | page 61, 62, 63 , 64, 65, 66
| M Color Palette | page 67, 68
| N Interlace Mode | page 69, 70
III | Backward Compatibility Mode | page 71
| A Mark III (MS Japan) | page 71
| B Master System | page 71
| C RAM Board | page 71
IV | System I/O | page 72
| A Version Number | page 72
| B I/O Port | page 72, 73, 74 , 75
| C Memory Mode | page 76
| D Z80 Control | page 76
| 1 Z80 BusReq | page 76
| 2 Z80 Reset | page 76
| E Z80 Area | page 77, 78
V | VRAM Mapping | page 79, 80, 81 , 82, 83, 84 , 85, 86, 87

Genesis Sound Software Manual
Title Page
Index
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I | Z80 Mapping | page 1
| A Z80 Map | page 1
| B Interrupt | page 1
II | 68K Control of Z80 | page 2
| A Z80 Start-up | page 2
| A Z80 Handshake | page 3
III | FM Sound Control | page 3
| A 68K Accesses the FM Sound Source | page 3
| B Z80 Accesses the FM Sound Source | page 3
IV | PSG Control | page 3
| Overview | page 4
| A Little Bit About Operators | page 5, 6
| Register Overview | page 7
| Envlope Specification | page 8, 9
| Part 1 Memory Map | page 10, 11, 12 , 13, 14, 15, 16 , 17
| Test Program | page 17
| Programmable Sound Generator (PSG) | page 18, 19, 20

Genesis Tech Bulletins
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Genesis Tech Bulletin #0 | page 1
Genesis Tech Bulletin #1 | page 1
Genesis Tech Bulletin #2 | page 1
Genesis Tech Bulletin #3 | page 1
Genesis Tech Bulletin #4 | page 1, 2
Genesis Tech Bulletin #5 | page 1, 2, 3
Genesis Tech Bulletin #6 | page 1
Genesis Tech Bulletin #11 | page 1
Genesis Tech Bulletin #12 | page 1
Genesis Tech Bulletin #13 | page 1
Genesis Tech Bulletin #14 | page 1
Genesis Tech Bulletin #27 | page 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Genesis Tech Bulletin #28 | page 1, 2
Genesis Tech Bulletin #29 | page 1
Genesis Tech Bulletin #29a | page 1
Genesis Tech Bulletin #31 | page 1
Genesis Tech Bulletin #32 | page 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,

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