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Document Title: [MajorHavocMap.html (html file)]
Major HAvoc Memory Map
Memory Map for Major Havoc

Alpha Processor
                 D  D  D  D  D  D  D  D
Hex Address      7  6  5  4  3  2  1  0                    Function
--------------------------------------------------------------------------------
0000-01FF     |  D  D  D  D  D  D  D  D   | R/W  | Program RAM (1/2K)
0200-07FF     |  D  D  D  D  D  D  D  D   | R/W  | Paged Program RAM (3K)
0800-09FF     |  D  D  D  D  D  D  D  D   | R/W  | Program RAM (1/2K)
              |                           |      |                       
1000	      |  D  D  D  D  D  D  D  D   |  R   | Gamma Commuication Read Port
              |                           |      |
1200          |  D                        |  R   | Right Coin Switch (Player 1=0)
1200	      |     D                     |  R   | Left Coin Switch (Player 1=0)
1200          |        D                  |  R   | Aux. Coin Switch (Player 1=0)
1200          |           D               |  R   | Diagnostic Step
1200          |  D                        |  R   | Self Test Switch (Player 1=1)
1200          |     D                     |  R   | Cabinet Switch (Player 1=1)
1200          |        D                  |  R   | Aux. Coin Switch (Player 1=1)
1200          |           D               |  R   | Diagnostic Step
1200          |              D            |  R   | Gammma Rcvd Flag
1200          |                 D         |  R   | Gamma Xmtd Flag
1200          |                    D      |  R   | 2.4 KHz
1200          |                       D   |  R   | Vector Generator Halt Flag
              |                           |      |
1400-141F     |              D  D  D  D   |  W   | ColorRAM
              |                           |      |
1600          |  D                        |  W   | Invert X
1600          |     D                     |  W   | Invert Y
1600          |        D                  |  W   | Player 1
1600          |           D               |  W   | Not Used
1600          |              D            |  W   | Gamma Proc. Reset
1600          |                 D         |  W   | Beta Proc. Reset
1600          |                    D      |  W   | Not Used
1600          |                       D   |  W   | Roller Controller Light
              |                           |      |
1640          |                           |  W   | Vector Generator Go
1680          |                           |  W   | Watchdog Clear
16C0          |                           |  W   | Vector Generator Reset
              |                           |      |
1700          |                           |  W   | IRQ Acknowledge
1740          |                    D  D   |  W   | Program ROM Page Select
1780          |                       D   |  W   | Program RAM Page Select
17C0          |  D  D  D  D  D  D  D  D   |  W   | Gamma Communication Write Port
              |                           |      |
1800-1FFF     |  D  D  D  D  D  D  D  D   | R/W  | Shared Beta Communication RAM(not used) 
              |                           |      |
2000-3FFF     |  D  D  D  D  D  D  D  D   |  R   | Paged Program ROM (32K)
4000-4FFF     |  D  D  D  D  D  D  D  D   | R/W  | Vector Generator RAM (4K)
5000-5FFF     |  D  D  D  D  D  D  D  D   |  R   | Vector Generator ROM (4K)
6000-7FFF     |  D  D  D  D  D  D  D  D   |  R   | Paged Vector Generator ROM (32K)
8000-FFFF     |  D  D  D  D  D  D  D  D   |  R   | Program ROM (32K)
------------------------------------------------------------------------------------

Gamma Processor
              
                 D  D  D  D  D  D  D  D
Hex Address      7  6  5  4  3  2  1  0                    Function
--------------------------------------------------------------------------------
0000-07FF     |  D  D  D  D  D  D  D  D   | R/W  | Program RAM (2K)
2000-203F     |  D  D  D  D  D  D  D  D   | R/W  | Quad-Pokey I/O
              |                           |      |
2800          |  D                        |  R   | Fire 1 Switch
2800          |     D                     |  R   | Shield 1 Switch
2800          |        D                  |  R   | Fire 2 Switch
2800          |           D               |  R   | Shield 2 Switch
2800          |              D            |  R   | Not Used
2800          |                 D         |  R   | Speech Chip Ready
2800          |                    D      |  R   | Alpha Rcvd Flag
2800          |                       D   |  R   | Alpha Xmtd Flag
              |                           |      |
3000          |  D  D  D  D  D  D  D  D   |  R   | Alpha Comm. Read Port
              |                           |      |
3800-3803     |  D  D  D  D  D  D  D  D   |  R   | Roller Controller Input
              |                           |      |
4000          |                           |  W   | IRQ Acknowledge
4800          |                    D      |  W   | Left Coin Counter
4800          |                       D   |  W   | Right Coin Counter
              |                           |      |
5000          |  D  D  D  D  D  D  D  D   |  W   | Alpha Comm. Write Port
              |                           |      |
6000-61FF     |  D  D  D  D  D  D  D  D   | R/W  | EEROM
8000-BFFF     |  D  D  D  D  D  D  D  D   |  R   | Program ROM (16K)
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