Dmac vmebus address counter, Dmac byte counter, Table address counter – Motorola MVME1X7P User Manual

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VMEchip2

2

DMAC VMEbus Address Counter

In direct mode, this counter is programmed with the starting address of the
data in VMEbus memory.

DMAC Byte Counter

In direct mode, this counter is programmed with the number of bytes of
data to be transferred.

Table Address Counter

In command chaining mode, this counter should be loaded by the
processor with the starting address of the list of commands. This register
gets reloaded by the DMAC with the starting address of the current
command. The last command in a list should have bits 0 and 1 set in the
next command pointer.

ADR/SIZ

$FFF4003C (32 bits)

BIT

31

. . .

0

NAME

DMAC VMEbus Address Counter

OPER

R/W

RESET

0 PS

ADR/SIZ

$FFF40040 (32 bits)

BIT

31

. . .

0

NAME

DMAC Byte Counter

OPER

R/W

RESET

0 PS

ADR/SIZ

$FFF40044 (32 bits)

BIT

31

. . .

0

NAME

Table Address Counter

OPER

R/W

RESET

0 PS

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