MiSTer FPGA Forum

Newsdee wrote: ↑Mon Nov 14, 2022 10:45 am There is also this working on MiST: https://github.com/gyurco/Next186

they had issues porting into Mister

In any case both cores are far less accurate than this one. Kitune, MCL and Spark did a very great job.

I saw this:
https://github.com/jamieiles/80x86

breiztiger wrote: ↑Fri Nov 11, 2022 7:53 pm Hi

Can it be possible to support amstrad pc 1512 bios ?

Thanks in advance

Hi! Have you tried to load the bios? I'm curious

As special I read it has 640x200 x 16 color CGA

Very cool! Thanks for the helpful diagram. I am very much looking forward to watching the future progress of this including the next release. The ao486 IDE module is not perfect in ao486 because some operating systems don't play nice with it (OS/2, NT, etc.), but it seems fine in DOS. In the case of PCXT, it will probably be just fine. It would be...

https://www.vogons.org/viewtopic.php?t=50417

I found this thread to be very interesting on how PC jr is detected

So going through the INI file, it seems like we need to remove the TURBO options so only the "slow" one remains? # TURBO=Full - 486; $A100 # TURBO=Med - 286/386; $A1A0 TURBO=Slow - XT 8088; $A1A1 Remove them all... because changing speed on PCXT is not supported (yet) Other than that, I suppose we'd need to review which screensavers and ...

I think I saw that Alleycat has a special color theme for the PCjr. Not sure how many games have special PCjr support though. This article goes into it. There does seem to be... well... more than 10 games? That have PCjr specific enhancements without having Tandy support as an alternative: http://nerdlypleasures.blogspot.com/2022/04/list-of-pcjr-a...

kitune-san wrote: ↑Sun Oct 30, 2022 11:29 am Sorry. That was my misunderstanding.

No sorries, we would not have this core without you!

I Know Scsi is not the same as IDE, but, this might have clues

https://github.com/Grabulosaure/ss/blob ... csi_sd.vhd

I uploaded it there
https://github.com/jsmolina/simple-menu-dos-launcher


Update, Mills added this nice look and feel:

So going through the INI file, it seems like we need to remove the TURBO options so only the "slow" one remains? # TURBO=Full - 486; $A100 # TURBO=Med - 286/386; $A1A0 TURBO=Slow - XT 8088; $A1A1 Remove them all... because changing speed on PCXT is not supported (yet) Other than that, I suppose we'd need to review which screensavers and ...

Microcorelabs, might this be an issue?

I reused a code from stackoverflow and all I get is a hang trying to return from the interrupt, printing the following: 198712617-16c50d4c-e940-4c3d-a7d6-5ec6e44dc546.jpeg This is the code and the compiled .exe I reused: https://github.com/MiSTer-devel/PCXT_MiSTer/files/9891106/KEY2.zip It's like not returning properly from interrupt in the: out 20...

Newsdee wrote: ↑Fri Oct 28, 2022 1:19 pm There is MyMenu created by by BinaryBond007. It may work better than TDL?
It can be found as part of this pack:
https://github.com/bbond007/DOS_Shareware_MyMenu

But that requires Long file name Fat32, isn't it?

I had the same thoughts, but there needs to be enough of the hardware there so the core thinks there is an IDE card in there and it needs to be able to keep up with the strict clock cycle timing it is expecting. Then it is a matter of knowing how to take the data out of and into the FPGA side and manipulate the VHD file on the software side to rea...

dmckean wrote: ↑Thu Oct 27, 2022 9:17 pm I know that in real life there were IDE cards that could operate as either 8-bit or 16-bit but when used on an 8-bit bus only half the physical drive space was accessible. I don't know if that information helps at all.

Xt-ide has a multiplexing circuit to do so.

thorr wrote: ↑Thu Oct 27, 2022 5:05 pm I wish someone would answer my questions. Not sure what I did to get blacklisted.

No, not blacklisted. From what I understood from the core author he lacks the knowledge to do this from scratch, even the duck typing implementation of ide.

So any help I guess will be appreciated from spark

From what I understood from Malor is that you just need what we say in development 'duck typing'. "If it walks like a duck and it quacks like a duck, then it must be a duck".

If it talks like an IDE, then it must be an IDE.

kitune-san wrote: ↑Wed Oct 26, 2022 10:57 am Maybe like this.

Code: Select all

tandy_snd <= {2{oldt_1[10]}, {4{oldt_1[10]}, oldt_1}} << status[35:34]};

I'm wondered that you always have a nice solution

Good idea. Personally I like RLoader , now what we also have to do is to prepare a good list of games compatible with the core, both Tandy 1000 and PCXT , and always launch a BAT using XTCTL to run each game in the best conditions. yes, we could prioritize the 'auto detection' of the executable and look for a run.bat here: The script needs some it...

Edit we did this one https://github.com/jsmolina/simple-menu-dos-launcher/ I was playing (these are POCs, that's why they are on Gists) last weekend with Total Dos Launcher. It's a very nice launcher, but the script forces you to zip the games. If you don't zip, it copies all the files from all the games in the same folder. Decompressing a zip each...

Interesting! There was this article that showed the differences http://nerdlypleasures.blogspot.com/2012/06/ibm-pcjr-and-tandy-1000-games.html?m=1 The games determined by the system they were running on by checking the PC identifier byte at F000:FFFE, which was FF for a PC, FD for a PCjr., FE for an early XT and all PC Portables, FB for a later XT,...

Did the OSD expects AT or XT commands? The XT kb. generates 2 start bits, 8 data bits, make/break bit, and a stop bit. The AT kb. is 1 start bit, 8 data, 1 parity, and a stop bit. The XT uses a make/break bit to indicate key up/down. The AT sends one byte for keydown and two bytes for keyup. The XT keyboard scan codes have different values than the...

I tried both dual ram and single ram and I haven't noticed any difference. It's it any?

Hello, I've just noticed a weird issue with the mouse. I do not think that I did something wrong (but who knows :-) ), I'm using MS-DOS Version 5.0, Ctmouse v1.9 (ctmouse /s2) and once I've the ctmouse loaded, the EDIT command of MS-DOS freezes. When ctmouse is not loaded, EDIT works, I've tried with different IRQ just to see, but always the same ...

sofakng wrote: ↑Fri Oct 14, 2022 2:19 am I'd absolutely love to see this. I've also just discovered this fact about older Sierra games sounding better on the Tandy/PCjr than on the PC speaker.

Perhaps somebody can integrate the JT89 verilog code into ao486?

Why not use them on pcxt core? They work on it.

Hodor wrote: ↑Tue Oct 11, 2022 9:56 am Does the mouse work out of the box or need some driver installation? Sorry for asking, but core´s readme doesn´t show any info yet.

Like in old dos times
Any serial mouse driver will do the job (eg. Ctmouse)

Newsdee wrote: ↑Wed Oct 12, 2022 2:04 pm Does it work with PC booter games?

Yes it does

I just did a pull request for a quickstart instructions with freedos and ctmouse. Freedos is chosen because of copyright.

suww37 wrote: ↑Mon Oct 10, 2022 10:03 pm

spark2k06 wrote: ↑Mon Oct 10, 2022 2:20 pm @kitune-san, I'll pull request myself on the prerelease branch with your changes.

Thanks for everything!

Great! Now all that's left is a Hercules garphic module transplant? The "ski or die" game is not running normally yet, and I hope this will be resolved too. Thank you.

have you tried as tandy or cga modes?