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MJoergen / C64MEGA65

Commodore 64 core for the MEGA65 based on the MiSTer FPGA C64 core
GNU General Public License v3.0
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PRG loader fails at 4k intro Boo by Reflex #88

Open sy2002 opened 1 year ago

sy2002 commented 1 year ago

The following is true for our core as well as for the MiSTer core, tested by @paich64 (and for sy2002's internal records, here is the private Discord link: https://discord.com/channels/@me/1034779919802191882/1156677319390412880):

How to reproduce:

  1. Download the PRG of Boo by Reflex, for example from here: https://csdb.dk/event/?id=3187
  2. Use MiSer's or C64 for MEGA65's "direct PRG loader": Fails
  3. Put the prg on a D64 disk image, load it manually: Works

What is remarkable here is: The PRG file format is simple: The first two bytes contain the address to where we should load the PRG and this is what MiSTer's and also our PRG loader are doing. So Boo seems to perform some magic...

sy2002 commented 2 months ago

Might be related to this bug: https://github.com/MJoergen/C64MEGA65/issues/144