Dmac Local Bus Address Counter; Dmac Vmebus Address Counter - Motorola MVME172 Programmer's Reference Manual

VMEchip2
2

DMAC Local Bus Address Counter

ADR/SIZ
BIT
NAME
OPER
RESET

DMAC VMEbus Address Counter

ADR/SIZ
BIT
NAME
OPER
RESET
2-60
3
31
DMAC Local Bus Address Counter
In the direct mode, this counter is programmed with the starting address of
the data in local bus memory.
31
DMAC VMEbus Address Counter
In the direct mode, this counter is programmed with the starting address of
the data in VMEbus memory.
The DMAC executes D64 block transfer
cycles on the VMEbus. In the block transfer
mode, the DMAC may execute byte, two-
byte and four-byte cycles at the beginning
and ending of a transfer in non-block transfer
mode. If the D16 bit is set, the DMAC
executes D16 block transfers.
$FFF40038 (32 bits)
. . .
R/W
0 PS
$FFF4003C (32 bits)
. . .
R/W
0 PS
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