Jurgen Kramer

S1985/S3527 missing undocumented IO port

45

Both the S3527 and the S1985 have an undocumented feature where PPI port A (0a8h) is mirrored on I/O port 0ach. This can be used to identify if and wich...

MCLZ8 issue with halt?

12

Thanks for the great MCZL8 solution! I am having a lot of fun using it with my MSX. It looks like the HALT instruction is not working as it should....

Litex SD card image?

2

Thanks for the Litex tutorial. Can you add a link to an linux SD card image so the system can boot ?

I am having some issue with YJK color decode. It does not display the correct colors and also seem to use the same color for multiple pixels. Checking the FPGA...

Gouda SCSI extension: separate SCSI controller and ROM?

1

Very cool to see that OpenMSX supports the 'Gouda SCSCI interface' ! It seems the current implementation tightly couples the SCSI controller and needed ROM in a single extention. It...