retro16 / acsi2stm

Atari ST ACSI to SD card converter with a STM32
GNU General Public License v3.0
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BAD-DMA in STE finally confirmed and fixed. #59

Open TzOk83 opened 8 months ago

TzOk83 commented 8 months ago

A bug in DMA controller behavior in early STE machines using the C025913-38 DMA controller and the GSTMCU has been confirmed, described, and fixed. Credits go to Christian Zietz. You can find all the details at https://www.chzsoft.de/site/hardware/new-atari-ste-bad-dma-investigation/

An original topic, with a DMA fixer PCB, is available here: https://forum.atari-home.de/index.php/topic,17461.0.html