test_simm30_dram

view README.md @ 4:1f8683589ee8

added readme and hardware
author John Tsiombikas <nuclear@member.fsf.org>
date Thu, 09 Mar 2017 08:45:11 +0200
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1 72pin SIMM DRAM tester
2 ======================
4 Firmware for my 72pin SIMM tester written to run on an Atmel atmega644p AVR
5 microcontroller.
7 License
8 -------
9 Firmware:
10 Copyright (C) 2017 John Tsiombikas <nuclear@member.fsf.org>
11 This program is free software. Feel free to use, modify, and/or redistribute it
12 under the term of the GNU General Public License v3, or at your option any later
13 version published by the Free Software Foundation. See LICENSE.firmware for
14 details.
16 Hardware:
17 Copyright (C) 2017 John Tsiombikas <nuclear@member.fsf.org>
18 Creative Commons Attribution Share-Alike (CC BY-SA). See LICENSE.hardware for
19 details.
21 Usage
22 -----
23 Plug a 72pin SIMM, connect terminal over a serial link (RS232 or USB) and power
24 up the tester.
26 Commands:
28 w <addr> <value> - write byte to address
29 r <addr> - read byte from address
30 s <addr_bits|ras_lines> <value> - override detected addr_bits/ras_lines
31 t <addr> - test address
32 d - detect DRAM
33 h - help