Method and apparatus for performing maskable multiple color block writes
US5764963A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1995 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Sep 20, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C7/1015
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Circuitry for performing a memory block write is described. The memory block includes b block words, each block word having t block bytes. Each block byte has s bits of memory. Each block byte is associated with at least two associated mask value bits. A constant register has at least s.times.t bits of memory arranged as t constant bytes, each constant byte storing a constant value, each constant byte associated with one block of every block word. The block write circuitry includes control circuitry for selecting one of a normal write function and a block write function in accordance with a block write signal. When the block write function is selected, the control circuitry stores the associated constant value in every nonmasked block byte substantially simultaneously in accordance with a value of the associated mask value bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.