Motorola MVME1X7P User Manual
2-60
Computer Group Literature Center Web Site
VMEchip2
2
DMAC VMEbus Address Counter
In direct mode, this counter is programmed with the starting address of the
data in VMEbus memory.
data in VMEbus memory.
DMAC Byte Counter
In direct mode, this counter is programmed with the number of bytes of
data to be transferred.
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.
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