lance@helios.ucsc.edu (Lance Bresee) (03/15/90)
I have gotten so much helpful info on chips. Thanx muchly to all!!!!!! I have another chip which I cannot find docs on. It is on a clock card, which will not be recognized by any clock software I have. I need chip pinouts to decode the addresses which access the chip...hard to do when you don't know what is the chip select pin. The chip has the number HD146818p is 24 pin dip, and bears a HITACHI logo. The decode is via a pal, so I need to put signals on the address lines and examine the status of the chip select pins. Also, I need to know what registers hold which info. Four address lines connect directly to the chip, so I suspect that there are 16 internal registers, or 8, with one address line connected directly to a chip select line. All *8 data lines are buffered out, so suspect 8 bit data. ALSO also, Someone recently posted a missive about an alternative version of TIMER.COM. Foolishly, I did not save it. Could the poster of that missive tell me where I can get this improved version of TIMER, to see if the card responds to this? Thanx Muchly!!!!! Lance%helios@ucscc.ucsc.edu