https://dsibrew.org/w/index.php?action=history&feed=atom&title=Spime 2026-04-30T16:20:09Z Revision history for this page on the wiki MediaWiki 1.43.1 https://dsibrew.org/w/index.php?title=Spime&diff=2227&oldid=prev 2009-09-02T07:10:33Z

<p>New page: Short for the SPI Memory Emulator. This is <a href="/wiki/User:Scanlime" title="User:Scanlime">User:Scanlime</a>&#039;s approach to bootstrapping code via savegame hacks and providing a debug channel back to the PC. Whereas <a href="/wiki/EEPUART" title="EEPUART">EEPUART</a> is a ser...</p> <p><b>New page</b></p><div>Short for the SPI Memory Emulator.<br /> <br /> This is [[User:Scanlime]]&#039;s approach to bootstrapping code via savegame hacks and providing a debug channel back to the PC. Whereas [[EEPUART]] is a serial port, spime is a shared memory buffer.<br /> <br /> It is implemented on a Xilinx Spartan 3 FPGA board in Verilog. A 1MB SRAM buffer is concurrently accessible by the PC over a 3 MBit serial port, and by the DS over an SPI EEPROM emulator. This buffer can store normal save files, plus it can be used as a fast communication channel for memory dumps, commands to execute, etc.<br /> <br /> This shared memory buffer can also be used to send simple RPC-like commands to the DSi, implementing a very simple debug monitor for poking at registers in real-time.<br /> <br /> Source code is under a BSD-style license, available from a [http://svn.navi.cx/misc/trunk/nds/spi-mem-emulator/ public Subversion repository].</div>

Scanlime