ET4000 VAL16-8D (4K x 4) PROM - Tseng Labs

ET4000 VAL16-8D  dedicated custom PROM by Tseng Labs   

*** NOT to be confused with ET4000  VGA/EGA/CGA/MDA controller ***   

Tested as 4K-Word x 4-Bit 

Pre programmed with a Check Sum (CRC) of:  726709E0   

Possibly a support chip for ET4000 VGA chip used on graphic cards?   any info appreciated.   

Package:  20-pin DIP  

Status: NOS (New Old Stock)  circa 1991   

RoHS compliant: no