Actis VSBC-6862 Especificações descarregar pdf (Página 106)

Rev. 1.43

User's Guide

105

VMBMA VME Master: A32 Base address for window A RW

CS4 + $1055

VMBMB VME Master: A32 Base address for window B

CS4 + $1057

These register permit to complete the high order address for accesses in A32 mode.

D8 D9 D10 D11 D12 D13 D14 D15

Value

x VA31 VA30 VA29 VA28 VA27 VA26 VA25

Default

x 0 0 0 0 0 0 0

With: VA31: VME address A31

VA25: VME address A25

VMAMA VME Master: AM for window A

CS4 + $105b

VMAMB VME Master: AM for window B

CS4 + $105d

These registers permit to complement the Address Modifiers (AM) for VME accesses and define the

Data mode for VME access.

D8 D9 D10 D11 D12 D13 D14 D15

Value x x AM2 AM1 AM0 x x x

Default x x 0 0 1 x x x

With: AM2: VME address modifier 2

AM0: VME address modifier 0

By default, the AM codes corresponds to non-privileged access.

For supervisor access, AM codes have to be modified from 0 0 1 to 1 0 1.

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