A500 HD8+

A500 HD8+ with PSU

A500 HD+ with PSU

A500 HD+

A500 HD+, Top view

A500 HD+, Rear view

Hi Res Version, A500 HD8+ - 864 x 616, 37K
Hi Res Version, A500 HD8+ with PSU - 1000 x 541, 44K
Image showing inside the unit - 1755 x 1167, 188K
Image of Rev 6 motherboard - 2914 x 1596, 1102K
Hi Res Version, A500 HD+ with PSU - 1662 x 1389, 388K
Image showing Box - 2964 x 1496, 682K
Hi Res Version, A500 HD+ - 1226 x 1224, 252K
Hi Res Version, A500 HD+, Top view - 1104 x 1851, 402K
Hi Res Version, A500 HD+, Rear view - 1920 x 798, 234K
Image showing left side - 1860 x 447, 149K
Image showing right side - 1887 x 486, 158K
Image showing PSU - 1324 x 1206, 177K

The HD8+ and HD+ is a SCSI controller which connects to the side expansion slot of the A500/+. The HD8+ has 4 x 30-pin SIMM sockets that can utilize 1Mx8 or 4Mx8 SIMM modules. Versions of this unit may exist which use the special 32pin GVP SIMM32 SIMMs instead of the standard 30pin SIMMS, but this has not been confirmed. It was assumed that the HD+ name meant that the unit did not include the option of adding memory, however this appears not to be the case and is more likely a by-product of GVP's inconsistent naming scheme.

• Combination eight (8) megabyte, zero-waitstate, FastRAM controller and ANSI XT3T9.2 compatible SCSI interface.
• High performance DMA transfers to and from hard-disk.
• SCSI data transfer rates of up to 3.58MB/sec.
• Auto-configs both Fast RAM and SCSI interface.
• Internal 50-pin SCSI connector.
• External 25-pin SCSI connector (DB25).

Power Connector Pinout:

Looking at the back of the unit:

   1     3
    4   5
      2

1  Earth Ground
2  Signal Ground (5V ground)
3  +5V RED
4  WHITE (not connected)
5  +12V BROWN

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