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Difference between revisions of "Power Macintosh 7500"

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=General Information=
 
=General Information=
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The Power Macintosh 7500 introduced a new wider, more accessible Centris/Quadra 650-style case. It was powered by a 100MHz [[PowerPC 601]] processor (on a removable daughtercard), and had 24-bit composite and S-video input. It sold for $2,700, and was replaced nine months later by the [[Power Macintosh 7600]].
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Codename: TNT. The 7500 was introduced in August 1995 and discontinued in May 1996. Originally shipped with system software 7.5.2 and system enabler 701 v1.2.
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===CPU===
 
===CPU===
 
A 100 MHz [[PowerPC 601]] microprocessor card with built-in FPU and optional Level 2 cache.
 
A 100 MHz [[PowerPC 601]] microprocessor card with built-in FPU and optional Level 2 cache.

Revision as of 15:52, 30 June 2020

Pm7500.png

Based on the PowerPC 601 processor and PCI.

General Information

The Power Macintosh 7500 introduced a new wider, more accessible Centris/Quadra 650-style case. It was powered by a 100MHz PowerPC 601 processor (on a removable daughtercard), and had 24-bit composite and S-video input. It sold for $2,700, and was replaced nine months later by the Power Macintosh 7600.

Codename: TNT. The 7500 was introduced in August 1995 and discontinued in May 1996. Originally shipped with system software 7.5.2 and system enabler 701 v1.2.

CPU

A 100 MHz PowerPC 601 microprocessor card with built-in FPU and optional Level 2 cache.

Memory

8 or 16 MB DRAM expansion up to 512 MB using 168-pin, 70 ns, 64-bit DIMMs.

Video

2 MB VRAM, expandable to 4 MB. One Digital Audio Video (DAV) slot. Video-in support via external port.

Cache

The computer has a slot for an optional second-level cache SIMM with 256 KB to 4 MB of fast RAM.

PCI

The Power Macintosh 7500 and 8500 computers have three expansion slots using the industry standard PCI bus. The PCI bus is a nonsplit bus with 32-bit multiplexed address and data. The PCI expansion slots in these computers use a 33 MHz system clock. The Power Macintosh 7500 and 8500 computers accept standard PCI cards as defined by the PCI Local Bus Specification, Revision 2.0. The cards are required to use the 5 V signaling standard and to use the standard ISA fence described in the specification. Each computer provides a total of 50 W of power for its three expansion slots. Both 5 V and 3.3 V are supplied; the total power at both voltages must not exceed the 50 W maximum.

Compatibility

Big-Endian and Little-Endian Bus Addressing

The Power Macintosh 7500 and 8500 computers support both big-endian and little-endian conventions for addressing bytes in a word. Byte order for addressing on the processor bus is big-endian and byte order on the PCI bus is little-endian. The Bandit IC performs the appropriate byte swapping and address transformations to translate between the two addressing conventions.

Documentation

See Also

External Resources