© 1997-2006
Gareth Knight
All Rights reserved
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Hardware
The hardware schematics and feature list were in a constant state of
flux. The final feature list, dated February 1998, provides a detailed
diagram and additional information on the board:
Source: The PIOS One System Specification v1.97
| Hardware |
Hardware |
Notes |
| CPU |
PowerPC 603 & 604
G3 & G4 expected to be used at a later date |
Support for mult-processing using compatible operating systems.
This would allow the use of two older processors for maximum efficiency. |
| Flash ROM |
Up to 1MB of flash ROM |
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| RAM |
168-pin unbuffered 64-bit DIMM modules |
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| Sound |
Aureal AU8820 on the PCI Bus |
The AU8820 offers multichannel music synthesis based on samples stored
in main memory, MIDI, game port, and
digital I/O expansion.
The Aureal chip is an audio processor, which generates sounds using
an industry-standard AC97 CODEC. |
| Interfaces |
5 PCI (two 64-bit slots, three 32-bit)
Two ISA slots (absent in Maxxtrem system)
Two port USB
EIDE/ATA-2 controller
SCSI-2
SCC Interface (two ports)
ADB Interface
Digital Audio I/O port (DAI/O)
'Macintosh-compatible' RS-422 Serial
Standard RS-422 |
The Hydra chip, designed by Apple for the PowerPC Platform, adds support
for SCSI-2 host adaptor integration, as well as CHRP compatibility and
additional serial interfaces.
The Macintosh-compatible serial connector, based on the RS-422 standard,
is a 9-pin mini-DIN socket.
The faster RS-422 ports can be used for some kinds of printers, multichannel
MIDI devices, modems, and
cheap networking.
Each of the serial ports has individual read and write DMA channels,
to offload the CPU and avoid any latency problems. |
| Keyboard interface |
PS/2, USB, or ADB keyboards |
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Last Update: 19/07/2001
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