avr_test_simm72_dram
diff README.md @ 4:1f8683589ee8
added readme and hardware
author | John Tsiombikas <nuclear@member.fsf.org> |
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date | Thu, 09 Mar 2017 08:45:11 +0200 |
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1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/README.md Thu Mar 09 08:45:11 2017 +0200 1.3 @@ -0,0 +1,33 @@ 1.4 +72pin SIMM DRAM tester 1.5 +====================== 1.6 + 1.7 +Firmware for my 72pin SIMM tester written to run on an Atmel atmega644p AVR 1.8 +microcontroller. 1.9 + 1.10 +License 1.11 +------- 1.12 +Firmware: 1.13 +Copyright (C) 2017 John Tsiombikas <nuclear@member.fsf.org> 1.14 +This program is free software. Feel free to use, modify, and/or redistribute it 1.15 +under the term of the GNU General Public License v3, or at your option any later 1.16 +version published by the Free Software Foundation. See LICENSE.firmware for 1.17 +details. 1.18 + 1.19 +Hardware: 1.20 +Copyright (C) 2017 John Tsiombikas <nuclear@member.fsf.org> 1.21 +Creative Commons Attribution Share-Alike (CC BY-SA). See LICENSE.hardware for 1.22 +details. 1.23 + 1.24 +Usage 1.25 +----- 1.26 +Plug a 72pin SIMM, connect terminal over a serial link (RS232 or USB) and power 1.27 +up the tester. 1.28 + 1.29 +Commands: 1.30 + 1.31 + w <addr> <value> - write byte to address 1.32 + r <addr> - read byte from address 1.33 + s <addr_bits|ras_lines> <value> - override detected addr_bits/ras_lines 1.34 + t <addr> - test address 1.35 + d - detect DRAM 1.36 + h - help