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Axiom MC68HC11 Single Board Computer References


Table 11: Axiom CMD-11A8 MC68HC11-based single board computer, memory map (1/2).
Memory Range Size Function
0xFFFF-0xE000 8K Program EEPROM
0xDFFF-0xB800 10.2K ROM, RAM or EEPROM
0xB7FF-0xB600 512 bytes 68HC11 Internal EEPROM
0xB5FF-0xB5F8 8 bytes R65C51 ACIA
     
    0xB5FC-0xB5FF not used
    0xB5FB control register
    0xB5FA command register
    0xB5F9 status register
    0xB5F8 data register
0xB5F7-0xB5F4 4 bytes 82C55 ports
     
    0xB5F7 control register
    0xB5F6 port c
    0xB5F5 port b
    0xB5F4 port a
0xB5F3-0xB5F0 4 bytes LCD interface
     
    0xB5F2-0xB5F3 not used
    0xB5F1 data register
    0xB5F0 command register
0xB5EF-0xB5E0 16 bytes CS6 (onboard addx decoding)
0xB5DF-0xB5D0 16 bytes CS5
0xB5CF-0xB5C0 16 bytes CS4
0xB5BF-0xB5B0 16 bytes CS3
0xB5AF-0xB5A0 16 bytes CS2
0xB59F-0xB590 16 bytes CS1
0xB58F-0xB580 16 bytes CS0 (mixer Pbus controller)
     
    0xB584-0xB58F not used
    0xB583 control port
    0xB582 port C
    0xB581 port B
    0xB580 port A
0xB57F-0x8000 13.7K ROM, RAM or EEPROM
0x7FFF-0x1040 28.6K RAM



Table 12: Axiom CMD-11A8 MC68HC11-based single board computer, memory map (2/2).
0x103F-0x1000 64 bytes 68HC11 internal registers
     
    0x103F CONFIG
    0x103D INIT
    0x103C HPRIO
    0x1039 OPTION
    0x102F SCDR
    0x102E SCSR2
    0x102D SCCR2
    0x102C SCCR1
    0x102B BAUD
    0x1029 SPSR
    0x1028 SPCR
    0x1026 PACTL
    0x1025 TFLG2
    0x1024 TMSK2
    0x1020 TCTL1
    0x100F TCNT
    0x100E TCNT
    0x100D OC1D
    0x100C OC1M
    0x100B CFORC
    0x100A PORTE
    0x1009 DDRD
    0x1008 PORTD
    0x1007 DDRC
    0x1005 PORTCL
    0x1004 PORTB
    0x1003 PORTC
    0x1002 PIOC
    0x1000 PORTA
0x0FFF-0x00FF 3.8K RAM
0x00FE-0x0000 256 bytes 68HC11 internal RAM



Table 13: Axiom CMM-11A8 MC68HC11-based single board computer, memory map (1/2).
Memory Range Size Function
0xFFFF-0xE000 8K Program EEPROM
0xDFFF-0xB800 10.2K external memory select
0xB7FF-0xB600 512 bytes 68HC11 Internal EEPROM
0xB5FF-0xB5F4 12 bytes CS7
0xB5F3-0xB5F0 4 bytes LCD interface
     
    0xB5F2-0xB5F3 not used
    0xB5F1 data register
    0xB5F0 command register
0xB5EF-0xB5E0 16 bytes CS6 (onboard addx decoding)
0xB5DF-0xB5D0 16 bytes CS5
0xB5CF-0xB5C0 16 bytes CS4
0xB5BF-0xB5B0 16 bytes CS3
0xB5AF-0xB5A0 16 bytes CS2
0xB59F-0xB590 16 bytes CS1 (graphics LCD)
     
    0xB592-0xB59F not used
    0xB591 command register
    0xB590 data register
0xB58F-0xB580 16 bytes CS0 (board Pbus controller)
     
    0xB584-0xB58F not used
    0xB583 control port
    0xB582 port C
    0xB581 port B
    0xB580 port A
0xB57F-0x8000 13.7K external memory select
0x7FFF-0x6000 8K RAM (mirror)
0x2000-0x3FFF 8K RAM (mirror)



Table 14: Axiom CMM-11A8 MC68HC11-based single board computer, memory map (2/2).
0x103F-0x1000 64 bytes 68HC11 internal registers
     
    0x103F CONFIG
    0x103D INIT
    0x103C HPRIO
    0x1039 OPTION
    0x102F SCDR
    0x102E SCSR2
    0x102D SCCR2
    0x102C SCCR1
    0x102B BAUD
    0x1029 SPSR
    0x1028 SPCR
    0x1026 PACTL
    0x1025 TFLG2
    0x1024 TMSK2
    0x1020 TCTL1
    0x100F TCNT
    0x100E TCNT
    0x100D OC1D
    0x100C OC1M
    0x100B CFORC
    0x100A PORTE
    0x1009 DDRD
    0x1008 PORTD
    0x1007 DDRC
    0x1005 PORTCL
    0x1004 PORTB
    0x1003 PORTC
    0x1002 PIOC
    0x1000 PORTA
0x0FFF-0x00FF 3.8K Not Used
0x00FE-0x0000 256 bytes 68HC11 internal RAM



next up previous contents
Next: References Up: mqp Previous: Bus Combiner Module   Contents
Steve Richardson 2000-07-06
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