Items (8 total)

CP/M 2.2 is the operating system for the Osborne 1. It consists of a basic input/output system, a basic disk operating system (BDOS) and a console command processor (CCP).

The 5" monochrome CRT display for the Osborne 1. The screen displayed 52 characters in 24 rows. However the display could present 128 characters at a time; the user needed to use the cursor keys to display characters beyond the current 52 onscreen.

The Osborne 1 keyboard, also the lid and handle to the computer. Attached to the system through the 24-pin port.

The 8-bit Zilog Z80 microprocessor onboard the Osborne 1 motherboard.

The two internal, single sided 5¼-inch floppy disk drives for the Osborne 1, located on the left and right sides of the CRT display.

Osborne advertised the drives as holding 102 KB each.

The motherboard for the Osborne 1 system.

An internal 300 baud modem. Internal 300 baud modems were sold as a peripheral to the Osborne 1, and were installed in the left floppy disk storage bay.

The Osborne 1 portable computer system.

This model has the "Screen Pac" upgrade, provided by Osborne, which adds an RCA connector to facilitate an external monitor connection, while also adding 80-column display support, up from the default…