Editing MIPS Magnum (section)

== Components ==
=== Processors ===
The MIPS Magnum 3000 has a 25 or 33&nbsp;MHz [[MIPS Technologies|MIPS]] [[R3000A]] microprocessor.

The MIPS Magnum R4000 PC-50 has a MIPS [[R4000]]PC processor with only 16 kB L1 [[CPU cache|cache]] (but no L2 cache), running at an external clock rate of 50&nbsp;MHz (which was internally doubled in the microprocessor to 100&nbsp;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.

=== Memory ===
For [[Computer memory|main memory]], the MIPS Magnum 3000 accepted 30-pin [[parity bit|true-parity]], 80ns [[SIMM]]s 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.

=== 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 Corporation|NCR]] [[NCR 53C9x|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.

=== Ethernet ===
The MIPS Magnum R4000 includes an on-board [[SONIC (ethernet controller)|SONIC]] [[Ethernet]] chipset and an [[Attachment Unit Interface|AUI]] Ethernet connector mounted on the case.

=== 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 Microsystems|SUN]] [[13W3]]-style output (which can be converted to the more common [[VGA]] pin-out), and is capable of pixel screen [[display resolution|resolutions]] of 640x480, 800x600, 1024x768, or 1280x1024. Because it is a simple framebuffer, the G364 does not include any [[graphics acceleration|accelerated]] graphics functions.

=== Serial and Parallel I/O ===
The MIPS Magnum R4000 also includes two standard [[RS-232]]-capable [[serial port]]s and an [[IBM AT]]-compatible [[parallel port]].

=== Floppy disk ===
Also, the MIPS Magnum R4000 had an IBM AT-compatible [[floppy disk]] controller and a single floppy drive bay.