One chip MSX improvement project

Altera DE1 - Development and Education Board

The newest EMSX_TOP [KAI] for DE1 has a problem in starting.
It cannot start from BIOS in EPCS4.
However, it starts from BIOS on SD-Card.
The cause is not known yet

In both DE1 and OCM, many problems are in VDP.
It is under examination towards remaking VDP now.

Do you have instructions on how to build cartridge slots for DE1?

DE1 version is making correction of Mr. caro the base.
The signal of a cartridge slot has not been connected now.
However, I think that it is connectable with a pin header if it assigns using "Pin Planner"

There is more LE of DE1 than LE of OCM. ( LE is Logic Element )
I am going to attach some special functions only to DE1 version.

It comes with power supply and USB programming cable. It has 20K LE as opposed to 12K LE on OCM, and it has a high quality DAC as opposed to 1-bit output of OCM, but it doesn't look as neat as OCM and it doesn't have cartridge ports.

It comes with power supply and USB programming cable. It has 20K LE as opposed to 12K LE on OCM, and it has a high quality DAC as opposed to 1-bit output of OCM, but it doesn't look as neat as OCM and it doesn't have cartridge ports.

And joystick/mouse connector ? Can I use USB?

The signal of a cartridge slot has not been connected now.
However, I think that it is connectable with a pin header if it assigns using "Pin Planner"
All signals necessary for a cartridge slot, are already connected to contacts of expanded plugs DE1.
On these plugs the signals for joysticks are connected also.