GVP-M - Amiga Hardware Database

Manufacturer “GVP-M”

1 expansion in database

Manufacturer GVP-M, USA	Date 1996	Amiga A2000	Interface CPU slot	Autoconfig ID 2017 / 22

Manufacturer

GVP-M, USA

Date

1996

Amiga

A2000

Interface

CPU slot

Autoconfig ID

2017 / 22

processor

memory

four 72 pin SIMM sockets accept 128 MB RAM
four 64 pin GVP SIMM sockets for backward compatibility
the 72 pin sockets support 4, 8, 16 or 32 MB SIMMs, the GVP sockets support 4 or 16 MB SIMMs
each 64 pin slot is linked directly to a 72 pin one - only one of them can be used at the same time
cannot mix 4 or 16 MB GVP SIMMs
cannot mix single or double sided 72 pin SIMMs
a double sided 72 pin SIMM rules out two GVP SIMM sockets
supports burst RAM access when SIMMs are installed in pairs
selectable RAM access speed 60-80 ns

Fast SCSI 2 controller

10 MB/s max transfer speed
50 pin internal header
50 pin external high density connector
optional 3.5" hard disk mounting kit
active SCSI termination can be disabled with jumper
the tekscsi2.device is not NSD compliant, it autoboots FFS partitions only - it looks for filesystems in the Kickstart ROM, but it does not care about filesystems loaded into the RDB area

notes

jumper settings

JR1 -	burst mode: ON - enabled
JR2 -	RAM speed: OFF - faster access time
JR3 -	burst write: ON - enabled
JR4 -	burst read: ON - enabled
JR5 -	GVP SIMM: ON - 16 MB, OFF - 4 MB
JR6 -	72 pin SIMM: ON - double sided, OFF - single sided
JR7 -	reserved
JR8 -	refresh: ON - 4k, OFF - 2k or 4k

J1 -	CPU power: 1-2 - 5V, 2-3 - 3.3 V
J2 -	CPU clock: 1-2 - 68040, 2-3 - 68060
J3 -	clock: OFF - enabled
J4 -	68000 mode: OFF - enabled
J5 -	DTACK pull-up: OFF - enabled
J6 -	active SCSI termination: OFF - enabled
J7 -	interrupt pending: ON - DMA backoffs, OFF - DMA ignores interrupt
J9 -	EPROM type: 1-2 - 27C256, 2-3 - 27C512