http://8-bitspaghetti.com/2012/04/nvram-programmer/ Wed, 21 Feb 2018 16:31:26 +0000 hourly 1 https://wordpress.org/?v=4.9.8 http://8-bitspaghetti.com/2012/04/nvram-programmer/#comment-1020 Mon, 16 Feb 2015 01:59:04 +0000 http://8-bitspaghetti.com/?p=92#comment-1020 Great job! I wonder what EEPROM chip you would recommend, can you give a jameco link? Thanks very much!

]]> http://8-bitspaghetti.com/2012/04/nvram-programmer/#comment-56 Sat, 05 May 2012 04:29:10 +0000 http://8-bitspaghetti.com/?p=92#comment-56 I based the schematic for this computer off of the one provided in Digital Computer Electronics by Albert Malvino. I made some modifications to add functionality to the design. The block diagram for my design is on Instructables.

]]> http://8-bitspaghetti.com/2012/04/nvram-programmer/#comment-52 Fri, 04 May 2012 14:10:43 +0000 http://8-bitspaghetti.com/?p=92#comment-52 Interesting project! Where/how to get a schematic for this computer?

]]> http://8-bitspaghetti.com/2012/04/nvram-programmer/#comment-27 Tue, 01 May 2012 12:03:03 +0000 http://8-bitspaghetti.com/?p=92#comment-27 […] NVRAM Programmer @ 8 Bit Spaghetti. Kyle writes – For the control matrix of my computer I am using some NVRAM chips to store a 16-bit control word for the various registers and control wires of my CPU. I decided not to use EEPROM as the chips that I bought were all faulty and wouldn’t write (I consulted many people and they agreed). I also decided that moving breadboard wires around was an extremely inefficient way to program 70 control words at 70 addresses. Which is why I decided to create a simple NVRAM (or EEPROM) programmer using the Arduino to send out addresses and data as well as control the write enable pin. My sketch cycles through bytes of data in an array of a specified length. My code is available for anyone who would find it useful, it can be modified quite easily for your programming needs. […]

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