Difference between revisions of "MIPS Magnum"
m (→Emulation) |
m (Minor typos) |
||
| Line 6: | Line 6: | ||
=== Processor === | === Processor === | ||
| − | The Magnum used a MIPS R4000 cpu, with | + | The Magnum used a MIPS R4000 cpu, with 16KB of primary cache, and a clock speed of 50MHz, which the cpu internally doubled to 100Mhz. |
| − | The Maximum | + | The Maximum amount of memory was 256MB. |
The Magnum also had an EISA bus for expansion. | The Magnum also had an EISA bus for expansion. | ||
=== SCSI === | === SCSI === | ||
| − | They were | + | They were equipped with a NCR 53C94 fast/narrow scsi chipset. |
=== Ethernet === | === Ethernet === | ||
| Line 28: | Line 28: | ||
=== Serial / Parallel === | === Serial / Parallel === | ||
| − | The | + | The Magnum had 2 RS-232 serial ports, along with an IBM compatable parallel port. |
=== ARC === | === ARC === | ||
| Line 44: | Line 44: | ||
== Emulation == | == Emulation == | ||
| − | [[Qemu]] can emulate a | + | [[Qemu]] can emulate a Magnum, it can even run the ARC firmware. There is a custom build out there that can even run Windows NT. See [[Installing Windows NT 4.0 on Qemu(MIPS)]] for more details. |
[[Category:Computers]] | [[Category:Computers]] | ||
Revision as of 16:29, 29 June 2010
The MIPS magnum is largely based on the inhouse Microsoft JAZZ boards that Microsoft used to develop Windows NT.
Contents
Hardware
This is a quick rundown of what I've been able to pull together of what went into a Jazz/Magnum.
Processor
The Magnum used a MIPS R4000 cpu, with 16KB of primary cache, and a clock speed of 50MHz, which the cpu internally doubled to 100Mhz. The Maximum amount of memory was 256MB. The Magnum also had an EISA bus for expansion.
SCSI
They were equipped with a NCR 53C94 fast/narrow scsi chipset.
Ethernet
A SONIC chipset was used, along with an AUI connector on the back of the chassis.
Video
The Magnum had a simple frame buffer called the G364. It was a fixed resolution display that was configured thru the ARC. All bitdepths were 256 colours, in the following resolutions.
- 640x480
- 800x600
- 1024x768
- 1280x1024
Serial / Parallel
The Magnum had 2 RS-232 serial ports, along with an IBM compatable parallel port.
ARC
The MIPS cpu boots up in little endian mode, and then depending on the firmware will either continue booting (ARC), or would reset into big endian mode. Most of the UNIX ports used the big endian mode. The Magnum, and all RISC workstations that were supported by Windows NT all needed a FAT system partition, in which the boot loader was stored.
Operating Systems
The Magnum could run these OS's out of the factory
Additionally there have been ports of NetBSD,OpenBSD & Linux to the Magnum.
Emulation
Qemu can emulate a Magnum, it can even run the ARC firmware. There is a custom build out there that can even run Windows NT. See Installing Windows NT 4.0 on Qemu(MIPS) for more details.
