[ Каскадный ] · Стандартный · Линейный Compactflash Adapter, своими руками

[alkree]

Кто-нибудь пробовал сделать: http://darkfader.net/ds/?

Вроде схема выглядит простой, только непонятно как после того как это всё соберёшь туда прошивку залить, или может она на саму CF пишется. Может кто знает как заливается прошивка в GBAMP??

[Товарищ Сухов]

http://www.semis.demon.co.uk/Gba/GBAmain.html
Hardware interface
The GBA provides two methods for loading executable programs, the GamePack (parallel) ROM cartridge and the GameLink (serial) multiboot loader. The format of the GamePack and GameLink interfaces have changed from older units. The GamePack interface has the same physical connector as older units but the electrical connections have changed significantly. The GameLink interface has a slightly modified 6 pin connector that prevents older leads from being inserted correctly. Although the GameLink electrical interface uses similar signal functions, serial communications is supported by many more modes of operation.



The GamePack interface uses a multiplexed 16bit data bus with a 24bit address bus. Because of this multiplexed interface method connecting a simple memory devices is not possible without some form of interface logic. As the external access results in a relatively slow data transfer rate two modes of operation are possible. Sequential access involves an initial start address followed by consecutive data reads until all data has been transferred. Random access involves an address write followed by a single data read. The following diagram (http://www.semis.demon.co.uk/Gba/AGBmem.pdf)contains all the basic building blocks of a 'random' and 'sequential' access interface. It assumes the use of a separate FLASH programmer to write the development program into memory. Please note this is just an example and has never actually been built or tested so please don't ask me for more information on the design.

Сообщение отредактировал Товарищ Сухов - Воскресенье, 20 ноября 2005, 20:16