Rom control register, Rom control register -51 – Motorola MVME172 User Manual

Page 129

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2-51

2

LCSR Programming Model

2VMEchip2

2LCSR Programming Model

I2WP

When this bit is high, write posting is enabled to the local
bus F page. When this bit is low, write posting is disabled
to the local bus F page.

I2EN

When this bit is high, the F page ($F0000000 through
$FF7FFFFF) map decoder is enabled. The F0 page is
defined as A24/D16 on the VMEbus while the F1-FE
pages are defined as A32/D16. When this bit is low, the F
page is disabled.

ROM Control Register

This function is not used on the MVME172.

ADR/SIZ

$FFF4002C

BIT

7

6

5

4

3

2

1

0

NAME

SIZE

BSSPD

ASPD

OPER

R/W

R/W

R/W

RESET

0 PS

0 PS

0 PS

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