1.1 --- a/ULA.txt Fri Jul 05 01:07:38 2013 +0200
1.2 +++ b/ULA.txt Sun Nov 17 01:00:40 2013 +0100
1.3 @@ -148,6 +148,11 @@
1.4 RAM Integrated Circuits
1.5 -----------------------
1.6
1.7 +Unicorn Electronics appears to offer 4164 RAM chips (as well as 6502 series
1.8 +CPUs such as the 6502, 6502A, 6502B and 65C02). These 4164 devices are
1.9 +available in 100ns (4164-100), 120ns (4164-120) and 150ns (4164-150) variants,
1.10 +have 16 pins and address 65536 bits through a 1-bit wide channel.
1.11 +
1.12 The documentation for the Electron mentions 4164-15 RAM chips for IC4-7, and
1.13 the Samsung-produced KM41464 series is apparently equivalent to the Texas
1.14 Instruments 4164 chips presumably used in the Electron.
1.15 @@ -187,6 +192,8 @@
1.16
1.17 See: TM4164EC4 65,536 by 4-Bit Dynamic RAM Module
1.18 http://www.datasheetarchive.com/dl/Datasheets-112/DSAP0051030.pdf
1.19 +See: Dynamic RAMS
1.20 + http://www.unicornelectronics.com/IC/DYNAMIC.html
1.21 See: KM4164B 64K x 1 Bit Dynamic RAM with Page Mode
1.22 http://images.ihscontent.net/vipimages/VipMasterIC/IC/SAMS/SAMSD020/SAMSD020-45.pdf
1.23 See: NTE2164 Integrated Circuit 65,536 X 1 Bit Dynamic Random Access Memory