EuroCUBE-65 Memory Map
                       ----------------------

The EuroCUBE-65/EuroBeeb memory map can be configured with links L9-L6. Most
boards are configured to memory map 1.

                                L8-L6 links
              0        1        2          4        5        6
     0000 +--------+--------+--------+ +--------+--------+--------+
          |        |        |   M3   | |        |        |        |
     1000 |   M3   |        +--------+ |   M3   |        |        |
          |        |        |   M2   | |        |        |        |
     2000 +--------+   M3   +--------+ +--------+   M3   |   M3   |
          |        |        |        | |        |        |        |
     3000 |   M2   |        |        | |   M2   |        |        |
          |        |        |        | |        |        |        |
     4000 +--------+--------+        | +--------+--------+--------+
          |        |        |        | |        |        |        |
          |        |        |        | |        |        |        |
          |        |        |        | |        |        |        |
          |        |   M2   |        | |        |   M2   |        |
          |        |        |        | |        |        |        |
          |        |        |        | |        |        |        |
          |        |        |        | |        |        |        |
     8000 +--------+--------+--------+ +        +--------+        |
          |                          | |                          |
          |            M1            | |                          |
          |                          | |                          |
     C000 +--------+--------+--------+ |                 +--------+
          |            M0            | |                 |        |
     D000 +--------+--------+--------+ |                 |   M2   |
          |           BLK0           | |                 |        |
     E000 +--------+--------+--------+ +-----------------+--------+
          |                          | |         M1/BLK0          |
     E800 +            M0            + +--------------------------+
          |                          | |          M1/IO           |
     F000 +--------+--------+--------+ +--------------------------+
          |            M0            | |                          |
     F800 +--------+--------+--------+ +           M0             |
          |           M0/IO          | |                          |
     FF00 +--------+--------+--------+ +--------------------------+

Link L9 has no effect. Sideways ROMs can occupy the &8000-&BFFF position by
removing the ROM plugged into M1 and external hardware decoding the address
lines to implment ROMSEL at &FE30 and paging in the relevant ROM when
&8000-&BFFF is selected.

CUBE hardware selected with BLK0, BLK1 or BLK2.


                          EuroCUBE-65 Memory Map 1
                          ------------------------
0000-3FFF  M3 RAM
4000-7FFF  M2 RAM
8000-BFFF  M1 ROM paged with FE30
C000-CFFF  M0 ROM
D000-DFFF  BLK0
  CU-Teletext:
  D400-D7FF Teletext display memory
  D800-D8FF 6845 CRTC
    D800    6845 CRTC Register
    D801    6845 CRTC Data
  D900-D9FF

E000-FDFF  M0 ROM

FE00-FEFF  I/O
  FE00-FE0F  6522A VIA parallel I/O
    FE00  Input/Output Register B
    FE01  Input/Output Register A
    FE02  Data Direction Register B
    FE03  Data Direction Register A
    FE04  T1 Low Order Latches/Counter
    FE05  T1 High Order Counter
    FE06  T1 Low Order Latches
    FE07  T1 High Order Latches
    FE08  T2 Low Order Latches/Counter
    FE09  T2 High Order Counter
    FE0A  Shift Register
    FE0B  Auxilary Control Register
    FE0C  Peripheral Control Register
    FE0D  Interrupt Flag Register
    FE0E  Interrupt Enable Register
    FE0F  Input/Output Register A with no handshake

  FE10-FE17 6551 ACIA serial I/O
    FE10  Receive/Transmit Data Register
    FE11  Status/Reset Register
    FE12  Command Register
    FE13  Control Register

  FE18-FE1F M3002 Real Time Clock
    FE18  Read/Write Data

  FE20-FE7F BLK2
  FE80-FEFF BLK1

FF00-FFFF M0 16K ROM


                   CUBE Peripheral Board Addresses
                   -------------------------------
T-J99:
D902
D903
D904
D90B
D90C
D90D
D90E

DE0x
DE11
DE13
DE1C
DE1D
DE1E

CU-Graph:
DB10
DB20
DC00,X
DD00,Y
DD11
DD13
DE0x
DE1x
DF0x
DF10
DF13


CU-Teletext
D400-D7FF : Teletext screen memory
D800      : 6845 CRTC Register
D801      : 6845 CRTC Data
D900
D901
D902
D903
D904
D905
D906
D907
D908
D909
D90A
D90B
D90C
D90D
D90E
D90F