22 May
2009
22 May
'09
4:23 a.m.
On May 22, 2009, at 12:17 AM, bfranchuk at jetnet.ab.ca wrote:
;)
Oh good
grief. Pretty much any manufacturer's datasheets will
be fine for parts as standardized as those. Functionality,
pinouts, DC specs, even timing parameters will be very close if
not identical. Just google "74LS00 datasheet" or "62256
datasheet" and you'll be fine.
That is why I am using them. :) Grumbles at the lack of 9 bit wide ram chips ... No
matter how
you look at it
any kind of 18 bit computer has power compared to a 16 bit or less
cpu.
PS. Now you know what kind of computer I am designing, but this is
off topic since
only 1 off does not count as a classic computer unless it tubes or
flip/chips[1] used.
What sort of density are you looking for? I've seen some really
nice 16Kx1 SRAM chips made by Inmos. Or you could implement a DRAM
controller in your FPGA and do it that way, with 1-bit-wide DRAM chips.
-Dave
--
Dave McGuire
Port Charlotte, FL