On 4/22/2016 9:16 PM, Chuck Guzis wrote:
On 04/22/2016 07:54 PM, Jecel Assumpcao Jr. wrote:
I'd add the Texas Instruments SN74S481, SN54LS481 and SN74LS481 TTL
4 bit slices. The Schottky version had a 90ns clock cycle and the
low power versions 120ns. These were 48 pins chips and didn't have
an internal register bank like the 2901. The idea was that you
implemented a memory to memory architecture like the TMS9900.
Not exactly bit-slice, but how about the National IMP-16 chip set?
Too Early , Too Slow , Too $$$ is my guess.
With out the 6800/6502 8080/Z80 price wars, how much would a 8 bit
CPU be in the late 70s? $75?
--Chuck
Ben.
