2018-04-20

Here’s an updated snapshot of the FPGA Megadrive / Genesis core for both Chameleon64 and MIST with the latest memory speed improvements. I’m hopeful that this will pretty much eliminate the sprite issues that have been present in previous releases:

• Chameleon – fpgagen_chameleon_20180420.zip
• Mist – fpgagen_mist_20180420.zip

Part 3: Tweaking the VDP implementation
2018-04-20

In the second part of this series, I increased the throughput of the Megadrive core’s SDRAM controller, which gave nearly but not quite enough extra bandwidth to solve the sprite display problems.  To improve things yet further I need to look at the VDP implementation itself…

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