avr_mdcart_sram_lite

diff README.md @ 5:abb348704dec

reads/writes to memory, not tested in the megadrive yet
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 12 Mar 2017 04:27:43 +0200
parents 1f8683589ee8
children
line diff
     1.1 --- a/README.md	Thu Mar 09 08:45:11 2017 +0200
     1.2 +++ b/README.md	Sun Mar 12 04:27:43 2017 +0200
     1.3 @@ -1,8 +1,8 @@
     1.4 -72pin SIMM DRAM tester
     1.5 -======================
     1.6 +Megadrive USB cartridge prototype
     1.7 +=================================
     1.8  
     1.9 -Firmware for my 72pin SIMM tester written to run on an Atmel atmega644p AVR
    1.10 -microcontroller.
    1.11 +Firmware for my prototype megadrive usb development cartridge, written to run
    1.12 +on an Atmel atmega644p AVR microcontroller.
    1.13  
    1.14  License
    1.15  -------
    1.16 @@ -17,17 +17,3 @@
    1.17  Copyright (C) 2017 John Tsiombikas <nuclear@member.fsf.org>
    1.18  Creative Commons Attribution Share-Alike (CC BY-SA). See LICENSE.hardware for
    1.19  details.
    1.20 -
    1.21 -Usage
    1.22 ------
    1.23 -Plug a 72pin SIMM, connect terminal over a serial link (RS232 or USB) and power
    1.24 -up the tester.
    1.25 -
    1.26 -Commands:
    1.27 -
    1.28 -    w <addr> <value> - write byte to address
    1.29 -    r <addr> - read byte from address
    1.30 -    s <addr_bits|ras_lines> <value> - override detected addr_bits/ras_lines
    1.31 -    t <addr> - test address
    1.32 -    d - detect DRAM
    1.33 -    h - help