Motorola MVME2300 Series - Manual (Page 60)

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Board Description and Memory Maps
1
Base Module Status Register (BMSR)
The Base Module Status register is an 8-bit read-only register located at
ISA I/O address x0803.
BASE_TYPE
Base Module Type. This four-bit field is used to provide
the category of the base module and is defined as follows:
REG Base Module Status Register - Offset $0803
BIT SD7 SD6 SD5 SD4 SD3 SD2 SD1 SD0
FIELD BASE_TYPE
OPER R
RESET 1 1 1 1 N/A
BASE_TYPE Value Base Module Type
$0 to $8 Reserved
$9 MVME2300
$A to $F Reserved