MiSTer FPGA Forum

Excuse me. The gamepad is connected to the FM sound source GPIO, but the FM sound source is not implemented yet. Therefore, even if there is a gamepad setting, it cannot be used. HDD is also set, but it cannot be used.

Added support for 200 lines of graphics screen.

Thank you everyone for investigating the reason why it does not start. I uploaded the corrections for that part and other corrections. http://fpga8801.seesaa.net/archives/20210115-1.html The standard state is the following settings. DIP1-8 Extend DIP1-3 Normal DIP2-1 1 DIP2-2 Basic DIP2-3 80 DIP2-4 25 DIP2-5 Keep DIP2-6 Connect DIP2-7 Control DIP2-...

What exactly is Quartus giving an error message on the VIDEO clock?

There is still something wrong with the graphics screen. 200 lines cannot be displayed normally. The 400 line is displayed normally on DE0-CV to some extent, but for some reason MiSTer crushes the height in half.

I uploaded the latest Template core compiled with Advanced Setting (Synth and Fitter) of Compiler Settings.
https://fpga8801.up.seesaa.net/image/Zet98_20210109.rbf

I updated MiSTer to the latest version with update.sh earlier, and it became v210103, but it starts normally with the original binary.
Just in case, I uploaded a replacement of sys with the latest template core.

https://fpga8801.up.seesaa.net/rtl/rele ... MiSTer.rbf

By the way, the relationship between sys / sys.qip has never been updated, and both X68k and PC-88 use the same version.
Will these also not start with the latest MiSTer?

https://fpga8801.up.seesaa.net/image/MiSTer0.jpg
https://fpga8801.up.seesaa.net/image/MiSTer1.jpg
https://fpga8801.up.seesaa.net/image/MiSTer2.jpg
https://fpga8801.up.seesaa.net/image/MiSTer3.jpg

This is my environment.

At present, is there a mistake in the detection of disk insertion? It takes a very long time to start ROM-BASIC when the FD is not inserted. If you load a D88 image such as MS-DOS or Disk BASIC and reset it, it will start up in about the same time as usual. If you are using the BIOS of a model that makes a startup sound at startup, you will also he...

Is the menu displayed when you press F12? If the menu is displayed, the core itself should be running. Since Zet is equivalent to 8086 / V30 / 80186, the BIOS of the model at that time is required. As for the era, if it is not the BIOS of the era of PC-9801VM and PC-98DO, the instructions related to protected mode are used in the BIOS and it will n...

I put the compiled .rbf in output_files / and updated it to the archived one, so please check there.

Since Zet SOC itself is compatible with IBM PC, I think ao486 has higher performance. I think it's better to use ao486 than to port Zet to MiSTer.
I only use the core part of Zet (i8086).

The PC-98 core port to MiSTer has been completed and is being uploaded.
There are some strange parts and functions that are not supported (pallet, HDD, etc.).

http://fpga8801.seesaa.net/archives/20210107-1.html

sorry. The timing is adjusted to VGA (640x480) that can be used by the overwhelming majority of people.
The original (640x400) should be compatible with a slight change in RTL, but I have already thrown away the compatible display so I can't confirm it.

This is the progress at the moment: The INS and OUTS instructions that are missing in the 80286's real mode base have been added, and it seems that the INS instruction is not used in the BIOS, so it has been confirmed that the OUTS instruction works normally. The PUSHA and POPA instructions were implemented, but we found a bug and fixed it. As a re...

Thank you. I tried tracing with the 98DO BIOS, but I used the OUTSB instruction at a very early stage in the BIOS, which seems to be an instruction added after 80186/80286 / V30, but in Zet this is executed Unable, exception 06: It seems that an undefined instruction has occurred. (I think exception 06 was reserved on 8086) It doesn't seem to work ...

I'm proceeding very slowly. Rewriting to ao486 base is very difficult, so I'm thinking of going with Zet base as before, but since the BIOS image for 8086 / V30 machine is very difficult to obtain, I think that there is no choice but to write a compatible BIOS. I have. In that case, it seems that even DOS applications use the internal code of ROM B...

It doesn't matter if you don't have the SRAM file. There is no problem with normal operation with the initial value. If you want to create it, create an empty 16kB file, put it in the SD card, select it as an SRAM file, and then select STORE SRAM to update the contents. Just selecting a file does not load it. LOAD SRAM is required to load.

Unfortunately, the X68000 keyboard has 113 keys. Even if the keyboard for Windows is a Japanese keyboard, it has only 109 keys, so it was not possible to assign it to all the keys. Still, in my DE0-CV version I can assign all the major keys, but MiSTer doesn't assign some important keys such as backslashes. Fortunately, however, the X68000 has a so...

The DMA fix released on 8/27 revealed that there was something wrong with the writing on the SASI HDD.
I have uploaded a modified version, so please update it.
http://fpga8801.seesaa.net/archives/20200913-1.html

I'm sorry. I repaired link.

I've updated the RTL about three times in the last few days.
As for the contents of the correction, the DMA is corrected and the addresses related to graphics are reviewed.

Since the original IBM PC used 8088, legacy IO uses consecutive addresses, but since PC-98 used 8086 from the beginning, 8bit IO was directly connected to the 16bit data bus from the beginning. As a result, there are completely different peripherals connected to even and odd addresses. For example, an interrupt controller is connected to IO address...

I have uploaded a new RTL.
The change is that 32bit transfer of DMAC is supported.
http://fpga8801.seesaa.net/archives/20200813-1.html

A new RTL was uploded.
This update is about priority of screens(transparent).

Recent .qar files also include .rbf files, so please use it when compilation does not pass.
X68000/v17/output_files/release-F68kMiSTer.rbf

There is a bug in the disk emulator that seems to destroy the image when written.
I have uploaded a modified version, so please update it.
http://fpga8801.seesaa.net/article/476375569.html

There is a bug in the disk emulator that seems to destroy the image when written.
I have uploaded a modified version, so please update it.
http://fpga8801.seesaa.net/article/476375530.html

This is the second SD card connection. Same pin assignment as IO board but very cheap. Direct wiring to the adapter that converts microSD to SD.