| ??? 06/25/03 17:14 Read: times |
#49344 - RE: Correction Responding to: ???'s previous message |
Rob Klein wrote:
------------------------------- Utter crap! To build something equivalent to the Philips 668 you would need at least: - an 8085 - an (E)PROM (64K) - a RAM (8K) - an 8155 - an external UART And then some... I won't even begin to do the same comparison for Cygnal. Rob. dont jump to conclusion its 8155 not 8255. 8155 has • High speed and low power achieved with silicon gate CMOS technology • 256 words x 8bits RAM • Single power supply, 3 to 6 V • Completely static operation • On-chip address latch • 8-bit programmable I/O ports (port A and B) • TTL Compatible • RAM data hold characteristic at 2 V • 6-bit programmable I/O port (port C) • 14-bit programmable binary counter/timer • Multiplexed address/data bus • Direct interface with MSM80C85AH • 40-pin Plastic DIP very eager to prove me wrong huh. abhishek |
