Accession Number:

ADA141993

Title:

A Floating Point Processor for INTEL 8080A Microprocessor Systems,

Descriptive Note:

Corporate Author:

RUTHERFORD AND APPLETON LABS CHILTON (ENGLAND)

Personal Author(s):

• Bairstow,R.
• Barlow,J.
• Jires,M.
• Waters,M.

Report Date:

1982-03-01

Pagination or Media Count:

46.0

Abstract:

An A.M.D. 9511 Floating Point Processor has been interfaced to the Rutherford Laboratory Bubble Chamber Groups micro computers. These computers are based on the INTEL 8080A micro processor. The interface uses a memory mapped IO technique to ensure rapid transfer of arguments between processors. The A.M.D. 9511 acts as a slave processor to the INTEL 8080A system. The 8080 processor is held in WAIT status until completion of the A.M.D. operation. A software Macro Processor has been written to effectively extend the basic INTEL 8080A instruction set to include the full range of A.M.D. 9511 instructions. Author

Descriptors:

• *MICROPROCESSORS
• *INPUT OUTPUT PROCESSING
• *FLOATING POINT OPERATION
• COMPUTER PROGRAMS
• INTERFACES
• MICROCOMPUTERS
• INSTRUCTIONS
• COMPUTER FILES

Subject Categories:

• Computer Programming and Software
• Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE