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MOS 7501

MOS 7501

MOS 7501 microprocessor technical specifications

Developed by: MOS Technology
Launched: 1984
ALU bits: 8

It was a variant of the MOS 6510 introduced in 1984.

It expanded the number of I/O port pins from 6 to 8, but omitted the pins for the non-maskable interrupt and the clock output.

It was used in Commodore's C16, C116, and Plus/4 home computers.

A variant called the MOS 8501 later appeared, with improved manufacturing technology that allowed for higher clock speeds.

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MOS 7501 contemporary microprocessors


Manufacturer: Motorola
Launched: 1984
Bits: 32
Clock: 12.5 MHz
Transistors: 200 000


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Personal computers equipping the microprocessor MOS 7501


Manufacturer: Commodore
Launches: 1984
CPU: MOS Technology 7501 @ 0.89MHz
Memory: None
Support:
Hard drive: None
Operating system: Basic

A low-cost model sold in Europe (mostly in Germany).

Technically, it was identical to the C16, but had a smaller case and a rubber keyboard.


Manufacturer: Commodore
Launches: 1984
CPU: MOS Technology 7501 @ 0.89MHz
Memory: 16 KB ~ 64 KB
Support:
Hard drive: None
Operating system: Basic 3.5

It was created with the intention of replacing the Commodore VIC-20.


Manufacturer: Commodore
Launches: 1984
Manufactured in US
CPU: MOS Technology 7501 @ 1.76MHz
Memory: 640 KB
Support:
Hard drive: None
Operating system: BASIC

Its name refers to the ROM-resident office suite composed of four applications (word processor, spreadsheet, database, and graphics).

It was not a success in the United States, but it was sold in Europe.


Manufacturer: Commodore
Launches: 1985
Manufactured in US
CPU: MOS Tecnology 8502 @ 2MHz
Memory: 128 KB
Support:
Hard drive: None
Operating system: BASIC

Commodore's last 8-bit computer, introduced three years after the successful Commodore 64, with which it was almost completely compatible.

It was intended to compete with the Apple Macintosh and the IBM PC.

The C128's principal hardware designer was Bill Herd.


Manufacturer: Commodore
Launches: 1986
Manufactured in US
CPU: MOS Tecnology 8502 @ 2MHz
Memory: 128 KB
Support:
Hard drive: None
Operating system: BASIC

This is an improved version of the 128. Designed with a separate keyboard and a plastic casing for the CPU unit, it featured an integrated 1571 disk drive and a fan for cooling.
This model was sold primarily in Europe.


Manufacturer: Commodore
Launches: 1987
Manufactured in US
CPU: MOS Tecnology 8502 @ 2MHz
Memory: 128 KB
Support: Diskette 3½" DD
Hard drive: None
Operating system: BASIC

Very similar in appearance to the 128D, it was a low-cost model thanks to its more compact design.
It was sold primarily in the United States and Canada starting in 1987.