MiSTer FPGA Forum

AO486 seems to have some problems with real mode. Someone debugging those problems would also fix the issues it has with some DOS4GW games and probably more. This, DPMI specifically and something different between DOS4G (The og version that comes with most games) and DOS32a (which usually works around the problem and the game functions). It's a di...

AO486 seems to have some problems with real mode. Someone debugging those problems would also fix the issues it has with some DOS4GW games and probably more. This, DPMI specifically and something different between DOS4G (The og version that comes with most games) and DOS32a (which usually works around the problem and the game functions). It's a di...

You can also not load DOS into High or any other UMBs and it will also work fine. Thanks! That is all great information. I suspected it might be a Tandy mode issue, and since it also happens on real hardware, there is nothing to fix in the core. Do you know if it also crashes with real MSDOS? You could perhaps make different HD images with differe...

I finally got a chance to really start to try this core last night in between painting issues with my arcade cabinet build. It is really awesome. I have it set up as Tandy. The only major issues I have so far is the very first video mode does not sync right on my TV. It looks like it could be a 40 column text mode from what I can see showing the 6...

Should that image be using A000 in LTEMM or C000? I've been battling with the Tandy bios specifically all day. It seems to overwrite the high memory space on certain situations when Tandy graphics are used. even using a basic program. I should have a good image to test with tomorrow. The Tandy 1000 bios is the only one with this weird behavior. In...

Hi! I did the quickstart! I'll try soon this freedos version and I'll come back to you . I hope it's not an incompatibility with free DOS Thank you for the pull request with the necessary change in the image to fit the new memory model, it would be available to everyone: https://github.com/MiSTer-devel/PCXT_MiSTer/tree/main/games/PCXT Should that ...

1) Yes, use the top item in the menu that says --Manually Added Games. That will bring you over to Launchbox and you can add you custom games over there. It's not a perfect solution but it was what I could do at the time. 2) yes, just overwrite what is in E:/games/DUNE1992 or add you game along side it and modify the DUNE 1_start.bat script to hav...

1. The PC/AT 3.5Mhz equivalent speed is obtained from 25Mhz without cycle accuracy. It also doesn't perform much better than how it was previously set, which was based on 14.318Mhz ... so if this starts to give problems and is difficult to resolve, we could consider going back to 14.318Mhz without cycle accuracy as the maximum speed. Although now,...

Understood on #1, I just wanted to report the issue. No worries using the lower speeds, they work fine for me. #2, What is the right config.sys entries now for both UMBS.SYS and LTEMM? The way I did it? DEVICE=C:\USE!UMBS.SYS A000-AFFF D000-EC00 Using the A000 segment has that small risk that I mention, minimal but there it is... that someone will...

Okay, cool. I'll test that out. Anyone tried QRAM yet?

1. The PC/AT 3.5Mhz equivalent speed is obtained from 25Mhz without cycle accuracy. It also doesn't perform much better than how it was previously set, which was based on 14.318Mhz ... so if this starts to give problems and is difficult to resolve, we could consider going back to 14.318Mhz without cycle accuracy as the maximum speed. Although now,...

Not sure where to put this so I am going to put it here since this is the build we are using. In working on a PCXT/Tandy pack I've come across a few issues that I need to see if someone can duplicate. The positive here is I am not having any issues with IDE disk mounting, VHDs, etc. Everything seems to be stable there. Super super super nice to hav...

@spark2k06, Good morning, Did I miss something or maybe I do something wrong but since the new version of the core, while the Tandy & JukoST bioses work like a charm with the HDD that I've created (following the std rule as you explained), this same HDD is not recognized at all by other Bioses, even the TurboXT does not recognized it on my sid...

yeah, I've done it, it blows the usb controller chip and any dongle connected to it. DE-10 should be okay

This topic sparked a memory for me with the PCJr and the keyboard issues when running at a higher baud rate when connecting to a BBS, it would cause issues if you had lots of data coming in and pressed a keyboard key at the same time. Could this be happening due to the XTIDE COM data + the mouse data coming in similar to the notes below? Not sure w...

I have a weird issue since this update- I boot AO486, I get into the menu to select RAM options and for some reason it immediately starts the last game played without any opportunity to choose another. I haven't been able to work around it either, not by deleting configs, nothing. Sorry I can't help more kold666 you didn't exit that last game prop...

Did you try the symlink method? If you go to the Linux prompt on the MiSTer after connecting a USB floppy drive, you should be able to make a symlink to the floppy drive and if you then name that symlink something like floppydrive.img and place it in the PCXT or AO486 folder you should be able to mount that file in either of the cores and access w...

It is possible but it doesn't work right. mounts fine, reads the floppy disk but when you read from it something weird happens like it runs out of a buffer somewhere and just stalls when copying. Caldors steps are correct but it has been more than a year since I did it. Create an empty USB_FLOPPY.img file, symlink the read drive into it, then moun...

TDL Extraction and auto creation of a PC Booter disk is working great now. For those games that require a floppy boot, you need to create yourself an empty floppy on the mister first: cd/media/fat/games/PCXT serdrive -n 1.44MB floppy.img then go mount that floppy in the core and reboot. Both A and B will be the same floppy so either should work. Th...

If there is a problem with the timing of adding the offset and base address, would it work well if I change the BIU code as follows? It works! PKUNZIP and TDL already work perfectly :) I will make it public in the next release. Can you make me a pull request on the prerelease branch with this change, please? This way your contribution is registere...

It is possible but it doesn't work right. mounts fine, reads the floppy disk but when you read from it something weird happens like it runs out of a buffer somewhere and just stalls when copying. Caldors steps are correct but it has been more than a year since I did it. Create an empty USB_FLOPPY.img file, symlink the read drive into it, then mount...

A CRC check failure does not mean a bug in CRC calculation or comparison; it's probably a bad decompression. Most decompression algorithms supported by PKZIP involve a lot of code, it's not a small and simple loop. I might try some debugging. I need the exact version of PKUNZIP used, the original zip file that causes problems, and the BAD decompre...

Thanks for the reply. driving me nuts to be honest. This is my second attempt at getting this to work again (it used to be fine when i had all the pack on my SD card) Im not sure what a symlink is. this is the path: G:\games\AO486 my external drive is listed as G:\ the pack is in here, Top 300 cd folders etc etc Did you leave another ao486 folder ...

Dropped a bug here with PKUNZIP. Can someone else test and see if they are also getting CRC errors? you can just use PKUNZIP -T file.zip to test the archive. Works fine on AO486 and bombs for lots of zips on PCXT.
https://github.com/MiSTer-devel/PCXT_MiSTer/issues/6

I cannot seem to be able to compile the pcxt.rom and tandy.rom. I keep getting error invalid character '-' (U+00B7). Thats the line for the C:\PCXT>python make_rom_with_ibm5160.py File "C:\PCXT\make_rom_with_ibm5160.py", line 68 <title>PCXT_MiSTer/make_rom_with_ibm5160.py at main · spark2k06/PCXT_MiSTer · GitHub</title> ^ SyntaxError: in...

Hello i have a problem with the updater script, when i launch it it start downloading script version 0.8.15 Then it immediately download version 0.7.8 After this the update process begin and at the end it says: Successfully updated to v.0.7.8 Why it do not update to v 0.8.15? What i'm doing wrong? You are doing nothing wrong. There are multiple ve...

Hello i have a problem with the updater script, when i launch it it start downloading script version 0.8.15 Then it immediately download version 0.7.8 After this the update process begin and at the end it says: Successfully updated to v.0.7.8 Why it do not update to v 0.8.15? What i'm doing wrong? You are doing nothing wrong. There are multiple ve...

And AO486 with the Top 300 pack don’t forget about those sweet DOS games.

using the very latest misterfs from the repo right? I've never had issues with it not running or needing a bunch of memory. Maybe it is getting corrupt when you transfer it into the vhd?

All the graphics issues feel like they were resolved by all the code changes that Alex did. The scrolling bug, univbe, etc all feel solved. I can see the speed issue depending on the setting and it not being quite right. I haven't tried a combination of slowmo + the core settings which might get you closer. Lion King in particular seems to have a v...