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MIPS Magnum - Components

MIPS Magnum - Components: Encyclopedia II - MIPS Magnum - Components

MIPS Magnum - Processors. As mentioned, the MIPS Magnum 3000 includes a MIPS R3000A processor running at either 25 MHz or 33 MHz. The MIPS Magnum R4000 PC-50 includes a MIPS R4000PC processor with only 16 kB primary cache (but no secondary cache), running at an external clock rate of 50 MHz (which was internally doubled in the microprocessor to 100 MHz). The MIPS Magnum R4000 SC-50 is identical to the Magnum R4000PC, but includes one megabyte of secondary cache in addition to the primary cache. < ...

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MIPS Magnum: Encyclopedia II - MIPS Magnum - Components

MIPS Magnum - Components

MIPS Magnum - Processors

As mentioned, the MIPS Magnum 3000 includes a MIPS R3000A processor running at either 25 MHz or 33 MHz.

The MIPS Magnum R4000 PC-50 includes a MIPS R4000PC processor with only 16 kB primary cache (but no secondary cache), running at an external clock rate of 50 MHz (which was internally doubled in the microprocessor to 100 MHz).

The MIPS Magnum R4000 SC-50 is identical to the Magnum R4000PC, but includes one megabyte of secondary cache in addition to the primary cache.

MIPS Magnum - Memory

For main memory, the MIPS Magnum 3000 accepted 30-pin true-parity, 80ns SIMMs up to a maximum of 128 MB.

The MIPS Magnum R4000 accepted eight 72-pin true-parity SIMMs, up to a maximum of 256 MB.

MIPS Magnum - SCSI

The MIPS Magnum R4000 (both the R4000 PC-50 and R4000 SC-50) includes a single on-board SCSI bus using the on-board NCR 53c94 fast-narrow SCSI chipset. An internal cable with four 50-pin connections links internal SCSI devices, and also interfaces external SCSI devices via an endlink mounted on the rear of the case.

MIPS Magnum - Ethernet

The MIPS Magnum R4000 includes an on-board SONIC ethernet chipset and an AUI ethernet connector mounted on the case.

MIPS Magnum - Framebuffer

The video output for the Magnum R4000 consists of a proprietary framebuffer available as a custom full-length option card — the G364 framebuffer. The G364 includes a SUN 13W3-style output (which can be converted to the more common VGA pin-out), and is capable of pixel screen resolutions of 640x480, 800x600, 1024x768, or 1280x1024. Because it is a simple framebuffer, the G364 does not include any accelerated graphics functions.