DayStar Digital has licensed core system-level ROM code from Apple. DayStar's nPower PowerPC Coprocessor Card will connect to the Processor Direct Slot (PDS) on the following Macintosh models:
* Macintosh Centris 650.
* Macintosh Quadra 650, 700, 800, 900, 950.
The rest of this article details the card's specifications. The card is expected to ship upon the official introduction of Apple first PowerPC based Macintosh models.
nPOWER PowerPC Coprocessor Card
Processor
- 66 MHz or 80 MHz clock speed option
- 64-bit data bus
- 32-bit address bus
- Main logic board interface:
* Processor Direct Slot (PDS) with proprietary multiplexed pipeline data path processor.
- Processor performance:
* SPECint92 >60 (integer)
* SPECfp92 >80 (floating point) at 66 MHz
Processor Cache
- Built in 32 Kbyte unified instruction and data cache
- Optional write-back mode
Memory
- 2 banks with two 72-pin SIMM slots each for a total of four.
- SIMM sizes: 1M x 32, 2M x 32, 4M x 32, 8M x 32.
- RAM speed: 60 ns (nanoseconds) or faster.
- RAM Type: non-parity or parity (parity is not used)
Memory Configurations
- Capacity range: 0 MB to 128 MB
- on board configurations: 0 MB, 8 MB, 16 MB, 27 MB, 32 MB, 40 MB, 48 MB, 64 MB, 72 MB,
80 MB, 96 MB, 128 MB, 0 MB
Memory Data Transfer Rates
- With interleaving: 92 MB per second reads, 118 MB per second writes.
- Without interleaving: 76 MB per second reads, 92 MB per second writes.
- Data transfer modes: 64-bit cache line transfers
- Data transfer rates: 20 MB per second and higher, depending on host platform.
- Power consumption: 3.0 amps at 5V (with 8 MB of RAM)
Software
- nPOWER Control Panel (CDEV)
- Adobe PhotoShop 25 nPOWERed extension
Environmental Conditions
- 50 to 104 degrees F (10 to 40 degrees C)
- Humidity: 10 to 80 percent (non-condensing)
- Altitude: Sea level to 10,000 feet.
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