[Coco] Re: 512K EEPROM...or 4MB!!?

[RETRO Innovations]

   I am currently using an 29lv640eb, which is a 3V3 part.  I then use a
   single xc95144xl to do voltage shift, implement the bank registers and
   a config register (reading the switches, allowing writes to go to the
   ROM, turning on the LED, and moving the base address of the 4
   registers) and implementing the "full adder" that takes the bank
   register to the incoming address lines A15:11.

   I have found a cheaper 8MB ROM I am checking out, but I don't remember
   the part number.  Search on Digikey and you'll find it.

   Jim

     On December 9, 2015 at 2:29 PM chadbh74 <chadbh74 at hotmail.com>
     wrote:
     Out of curiosity, what are you using for your 8MB chip?
     -Chad
     https://sites.google.com/site/cbhlab101/
     Sent from my Galaxy S4
     --------- Original Message ---------
     From: RETRO Innovations
     To: CoCoList for Color Computer Enthusiasts
     Date: Tue Dec 08 23:46:09 CST 2015
     Subject: Re: [Coco] 512K EEPROM...or 4MB!!?
     Though it was not available to demo at the Coco show in 2015, I have
     on
     my bench a prototype 8MB Flash Cart, offering the following
     features:
     * it can be programmed by the Coco (1/2/3)
     * It can hide the registers, and unhide them.
     * The base address of the registers can be changed by the Coco
     * It supports mapping any 2kB region of the flash cart into the Coco
     cartridge address space
     * I believe it supports up to 32kB address space, but I am not 100%
     sure I have the logic correct for that (it would work, I just have
     not tested it)
     * It offers 2 momentary switches that can be read under software
     control
     * It supports a single LED that can be software controlled
     * It fits in a small Coco cartridge case
     * It is licensed under CC3.0 license
     * Can be produced pretty cheaply (under $50 for sure)
     Obviously, it lacks a nice programmer utility, which is where the
     project basically stopped. It's viable and cheap, but does require
     software development to be useful. I currently do not have the time
     to
     write such a utility, but I have two units and am happy to send them
     to
     interested individuals who are capable of writing said applications
     (needs a menu and a programmer app). I can provide any technical
     support on how to program, but my 6809 ASM and even my Coco BASIC
     prowess is limited.
     Not trying to rain on your parade, but thought I should lay my
     card(s)
     on the table.
     Jim
     --
     Coco mailing list
     Coco at maltedmedia.com
     https://pairlist5.pair.net/mailman/listinfo/coco
     --
     Coco mailing list
     Coco at maltedmedia.com
     https://pairlist5.pair.net/mailman/listinfo/coco