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4.1 REGISTER MAP
The VMIVME-2131 contains eight 8-bit Output Data Registers and an 8-bit
Control and Status Register (CSR). These Output Data Registers allow access to
64 current source/sink output channels and are addressable as two 32-bit
longwords, four 16-bit words, or as eight 8-bit bytes. The Output Data Registers also
support
bi-directional transfers, which is used for data validation or diagnostic
testing. The CSR is addressable as a 16-bit word or as two 8-bit bytes. It is a write-
only register.
4.2 DATA REGISTERS
RELATIVE ADDRESS
$XXX0
$XXX1
$XXX2
$XXX3
$XXX4
$XXX5
$XXX6
$XXX7
XXX of the address is determined by data register address select jumpers
as shown in Section 5.
DR0 to DR7 are read/write registers.
CSRs
RELATIVE ADDRESS
$YYY0
$YYY1
YYY of the address is determined by CSR address select jumpers as
shown in Section 5.
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4 SECTION
PROGRAMMING
MNEMONIC
DR0
DR1
DR2
DR3
DR4
DR5
DR6
DR7
MNEMONIC
CSRU
CSRL
20
NAME/FUNCTION
DATA REGISTER 0
DATA REGISTER 1
DATA REGISTER 2
DATA REGISTER 3
DATA REGISTER 4
DATA REGISTER 5
DATA REGISTER 6
DATA REGISTER 7
NAME/FUNCTION
CSR UPPER BYTE
CSR LOWER BYTE
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