Demul Mpr- 21931. Ic501

: If you have 1_01d_01.bin (CRC 89F2B1A1 ), rename it exactly to mpr-21931.ic501 .

Therefore, an error referencing "DEMUL MPR-21931 IC501" essentially translates to: “The logic controller on this third-party NAOMI cartridge (designed for Demul-verified ROMs) has failed.” demul mpr- 21931. ic501

: Place the file inside a folder named dc or zip it into a file named dc.zip , then place it in the ROMs directory of your DEmul installation. : If you have 1_01d_01

| Original Marking | Direct Replacement | Notes | |----------------|--------------------|-------| | 3844B | UC3844B / TL3844B | 30V max, 16V startup | | 3843B | UC3843B | Lower UVLO (8.5V) – may not start if aux winding is high | | L6562 | L6562D | PFC controller – check pin 7 (VCC) and pin 8 (GD) | | DAP013 | NCP1216 | PSR controller – not compatible with 384x | demul mpr- 21931. ic501