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Info for cbm500


====== Commodore Business Machines B128-40 / Pet-II / P500 (1983) ======




===== Features =====

* CPU: MOS 6509 (Zilog Z80 & Intel 8088 optional) 1 MHz
* RAM: 128 KB (up to 896 KB, varying according to the model)
* ROM: 28 KB
* Text Modes: 40 x 25
* Graphic Modes: 300 x 200
* Colors: 16
* I/O Ports: IEEE-488, Serial RS-232
* Keyboard: Full stroke 94 key with numeric keypad and function keys
* Built In Media: Change according to the model
* OS: ROM Based (CP/M or MS DOS optional)
* Built In Language: Microsoft BASIC
* Peripherals: 2 x 170 KB or 500 KB or 1 MB 5" floppy disc unit, 8088 or Z80 card



===== Known Issues =====

The emulation of these systems is Preliminary.



===== History and Trivia =====

The CBM 500 had a 40-column, 300 x 200 pixels display. Contrary to the 600 and 700 it also had two ports for joystick, light pen and paddles.

MicroSoft Basic was in ROM. Both models had an option for a second processor (8088 or Z80) to function alongside the standard 6509, the 6509 was then used for I/O, display and keyboard management. They worked under Commodore DOS or CP/M and MSDOS when the computers used the other processors.

The 500 / 600 series was mainly sold in Europe, but a few models are known to have been sold in the United States.

//(info from old-computers.com)//



===== Links =====

* Commodore 500, 600 and 700 computers page -- http://www.davidviner.com/cbm.php
* Larry's PET/CBM Pages -- http://www.portcommodore.com/petindex.php?path=main-cbmidx
* CBM 500 / 600 at old-computers.com -- http://old-computers.com/museum/computer.asp?c=104



===== Other Emulators =====

* VICE -- http://www.viceteam.org/




Generated on Sun Jul 19 10:17:28 2009