Hi, still having same SM bug with 0.82.23 🙁 at least on my system: Debian x64 and dosbox-x compiled with ./build-debug

sm segment:offset af -> byte becomes 00
sm segment:offset bf -> byte becomes BF (OK)
sm segment:offset cf -> byte becomes 00
sm segment:offset df -> byte becomes 00
sm segment:offset ef -> byte becomes EF (OK)
sm segment:offset ff -> byte becomes FF (OK)

Same behaviour with "sm segment offset" syntax.

If you need more details or something you can ask, or if I can do something for fixing it.

Regards.

It may not be reproducible, but where a large time delay occurs at startup (such as loading cd audio), then sometimes movement of the parent window before the shell loads will lead to a sudden exit.

Well, I've manage to locate where the problem is.

For anyone interested the following patch will let you write bytes AC, AF, CF and DF in memory.

1--- debug.cpp.ORIG	2019-12-01 01:27:21.000000000 +0100
2+++ debug.cpp	2019-12-04 13:19:02.243257342 +0100
3@@ -1330,10 +1330,6 @@
4     else if (strncmp(hex, "FS", 2) == 0) { hex += 2; regval = SegValue(fs); }
5     else if (strncmp(hex, "GS", 2) == 0) { hex += 2; regval = SegValue(gs); }
6     else if (strncmp(hex, "SS", 2) == 0) { hex += 2; regval = SegValue(ss); }
7-    else if (strncmp(hex, "AC", 2) == 0) { hex += 2; regval = GETFLAG(AC); }
8-    else if (strncmp(hex, "AF", 2) == 0) { hex += 2; regval = GETFLAG(AF); }
9-    else if (strncmp(hex, "CF", 2) == 0) { hex += 2; regval = GETFLAG(CF); }
10-    else if (strncmp(hex, "DF", 2) == 0) { hex += 2; regval = GETFLAG(DF); }
11     else if (strncmp(hex, "ID", 2) == 0) { hex += 2; regval = GETFLAG(ID); }
12     else if (strncmp(hex, "IF", 2) == 0) { hex += 2; regval = GETFLAG(IF); }
13     else if (strncmp(hex, "NT", 2) == 0) { hex += 2; regval = GETFLAG(NT); }

When I type "SM some:addr XX" I want to write opcode XX in memory, not 0 or 1 based on some flag value for XX=AC, AF, CF or DF.

Patch tested with last dosbox-x release: 0.82.24

Happy debugging 😀

I believe the register/flag name parsing was originally intended to be for SR only, not for SM.

Does it work to write register values into memory (e.g. SM 0000:0200 AX)? If so, it may have been intended as a feature, but the collision between flag names and hex values could have been overlooked.

Yes, you can write register values into memory.

Found a bug in INT 10h AX=101Ah that was fixed for a game.

The function in DOSBox behind it reads the Attribute Controller in a way that leaves the screen blank.

You'd never notice in DOSBox SVN because SVN does not correctly emulate the display blanking caused by attribute controller programming (bit 5).

Prior to the change the function INT10_GetDACPage() was exactly the same in DOSBox-X as it was for DOSBox SVN.

https://github.com/joncampbell123/dosbox-x/issues/1362

I actually saw some of the issues on the projects github page, and one of them was a problem to run Photoshop on Win 3.x. Well, I have the same issue. It works for me with DosBox and cputype pentium_slow, but only after 2 or 3 attempts to run the software. Meanwhile, in DosPad, a port of dosbox for iOS, I can’t make it work. Since dospad is a very old port, is full of errors. But at least it runs my games and win 3.x.

I believe the issue (not only for dospad, but also for any version of dosbox including yours) is related to the cpu type.

While on vmware fusion, I can run the software well.

Edit: for what it is worth, I was attempting to run versions 3.0.4 and 3.0.5. All give me the same problem with win32s (even though I had it installed).

Hi, I just registered and am not sure if this is the right thread to post this question...

Has anyone tried playing Defender of the Crown? All of the versions I tried have garbled sound/music when playing but works fine when I used normal dosbox. I even followed the conf file of the regular dosbox but still failed.

I am trying the Tandy and EGA version for anyone's reference. Thank you!

Do note that I have bought copies from both GOG and Steam but want to try Tandy version due to the music but it just hangs.

Majinken wrote on 2020-04-15, 12:45:

Hi, I just registered and am not sure if this is the right thread to post this question...

Has anyone tried playing Defender of the Crown? All of the versions I tried have garbled sound/music when playing but works fine when I used normal dosbox. I even followed the conf file of the regular dosbox but still failed.

I am trying the Tandy and EGA version for anyone's reference. Thank you!

Looking at mobygames, there seem to be 3 PC versions.
- Original CGA only version for DOS
- re-released CGA/EGA version for DOS (not sure if this supports Tandy)
- PC Booter version with CGA/EGA and Tandy.

I have the PC Booter version, and when I start it in DOSBox-X with the default machine type, I gives me the choice for CGA or EGA graphics. And I get PC-Speaker sound.
If I instead start it with machine=tandy, it gives me the option between CGA and Tandy graphics, and I get Tandy sound.

Playing a bit with the Tandy version, I did not notice any corruption.

_Rob wrote on 2020-04-15, 16:34:

Looking at mobygames, there seem to be 3 PC versions. - Original CGA only version for DOS - re-released CGA/EGA version for DOS […]
Show full quote

Majinken wrote on 2020-04-15, 12:45:

Hi, I just registered and am not sure if this is the right thread to post this question...

Has anyone tried playing Defender of the Crown? All of the versions I tried have garbled sound/music when playing but works fine when I used normal dosbox. I even followed the conf file of the regular dosbox but still failed.

I am trying the Tandy and EGA version for anyone's reference. Thank you!

Looking at mobygames, there seem to be 3 PC versions.
- Original CGA only version for DOS
- re-released CGA/EGA version for DOS (not sure if this supports Tandy)
- PC Booter version with CGA/EGA and Tandy.

I have the PC Booter version, and when I start it in DOSBox-X with the default machine type, I gives me the choice for CGA or EGA graphics. And I get PC-Speaker sound.
If I instead start it with machine=tandy, it gives me the option between CGA and Tandy graphics, and I get Tandy sound.

Playing a bit with the Tandy version, I did not notice any corruption.

Aside from changing the machine type to "Tandy" on your conf, is there anything else you changed? Where did you purchase your PC Booter version? Why is it that when I play the Steam and GOG version in DOSBox-X, it get muffled or distorted sound? 🙁

Also, are you using the latest version of DOSBox-X?

_Rob wrote on 2020-04-15, 16:34:

Looking at mobygames, there seem to be 3 PC versions. - Original CGA only version for DOS - re-released CGA/EGA version for DOS […]
Show full quote

Majinken wrote on 2020-04-15, 12:45:

Hi, I just registered and am not sure if this is the right thread to post this question...

Has anyone tried playing Defender of the Crown? All of the versions I tried have garbled sound/music when playing but works fine when I used normal dosbox. I even followed the conf file of the regular dosbox but still failed.

I am trying the Tandy and EGA version for anyone's reference. Thank you!

Looking at mobygames, there seem to be 3 PC versions.
- Original CGA only version for DOS
- re-released CGA/EGA version for DOS (not sure if this supports Tandy)
- PC Booter version with CGA/EGA and Tandy.

I have the PC Booter version, and when I start it in DOSBox-X with the default machine type, I gives me the choice for CGA or EGA graphics. And I get PC-Speaker sound.
If I instead start it with machine=tandy, it gives me the option between CGA and Tandy graphics, and I get Tandy sound.

Playing a bit with the Tandy version, I did not notice any corruption.

The Tandy emulation in DOSBox-X was inherited from DOSBox SVN when the two projects forked, so it should not differ too much. The only change is to the mixer code so that rapid changes are reflected properly so that games like Skate or Die can play digitized guitar samples through one of the Tandy voices and similar changes to Adlib emulation so some old 1990-era games can play digitized speech through the Adlib FM channels.

TheGreatCodeholio wrote on 2020-04-15, 17:35:

_Rob wrote on 2020-04-15, 16:34:

Looking at mobygames, there seem to be 3 PC versions. - Original CGA only version for DOS - re-released CGA/EGA version for DOS […]
Show full quote

Majinken wrote on 2020-04-15, 12:45:

Hi, I just registered and am not sure if this is the right thread to post this question...

Has anyone tried playing Defender of the Crown? All of the versions I tried have garbled sound/music when playing but works fine when I used normal dosbox. I even followed the conf file of the regular dosbox but still failed.

I am trying the Tandy and EGA version for anyone's reference. Thank you!

Looking at mobygames, there seem to be 3 PC versions.
- Original CGA only version for DOS
- re-released CGA/EGA version for DOS (not sure if this supports Tandy)
- PC Booter version with CGA/EGA and Tandy.

I have the PC Booter version, and when I start it in DOSBox-X with the default machine type, I gives me the choice for CGA or EGA graphics. And I get PC-Speaker sound.
If I instead start it with machine=tandy, it gives me the option between CGA and Tandy graphics, and I get Tandy sound.

Playing a bit with the Tandy version, I did not notice any corruption.

The Tandy emulation in DOSBox-X was inherited from DOSBox SVN when the two projects forked, so it should not differ too much. The only change is to the mixer code so that rapid changes are reflected properly so that games like Skate or Die can play digitized guitar samples through one of the Tandy voices and similar changes to Adlib emulation so some old 1990-era games can play digitized speech through the Adlib FM channels.

I have the latest development build, but for this test I purposely used the last released version of DOSBox-X (0.83.0). And I only set machine=tandy. My config is simply

[dosbox]
machine=tandy
[autoexec]
boot Defender_of_the_Crown.img

_Rob wrote on 2020-04-15, 18:01:

I have the latest development build, but for this test I purposely used the last released version of DOSBox-X (0.83.0). And I on […]
Show full quote

TheGreatCodeholio wrote on 2020-04-15, 17:35:

_Rob wrote on 2020-04-15, 16:34:

Looking at mobygames, there seem to be 3 PC versions. - Original CGA only version for DOS - re-released CGA/EGA version for DOS […]
Show full quote

Looking at mobygames, there seem to be 3 PC versions.
- Original CGA only version for DOS
- re-released CGA/EGA version for DOS (not sure if this supports Tandy)
- PC Booter version with CGA/EGA and Tandy.

I have the PC Booter version, and when I start it in DOSBox-X with the default machine type, I gives me the choice for CGA or EGA graphics. And I get PC-Speaker sound.
If I instead start it with machine=tandy, it gives me the option between CGA and Tandy graphics, and I get Tandy sound.

Playing a bit with the Tandy version, I did not notice any corruption.

The Tandy emulation in DOSBox-X was inherited from DOSBox SVN when the two projects forked, so it should not differ too much. The only change is to the mixer code so that rapid changes are reflected properly so that games like Skate or Die can play digitized guitar samples through one of the Tandy voices and similar changes to Adlib emulation so some old 1990-era games can play digitized speech through the Adlib FM channels.

I have the latest development build, but for this test I purposely used the last released version of DOSBox-X (0.83.0). And I only set machine=tandy. My config is simply

[dosbox]
machine=tandy
[autoexec]
boot Defender_of_the_Crown.img

What happens if you use core=normal and a fixed cycle count?

TheGreatCodeholio wrote on 2020-04-16, 02:10:

_Rob wrote on 2020-04-15, 18:01:

I have the latest development build, but for this test I purposely used the last released version of DOSBox-X (0.83.0). And I on […]
Show full quote

TheGreatCodeholio wrote on 2020-04-15, 17:35:

The Tandy emulation in DOSBox-X was inherited from DOSBox SVN when the two projects forked, so it should not differ too much. The only change is to the mixer code so that rapid changes are reflected properly so that games like Skate or Die can play digitized guitar samples through one of the Tandy voices and similar changes to Adlib emulation so some old 1990-era games can play digitized speech through the Adlib FM channels.

I have the latest development build, but for this test I purposely used the last released version of DOSBox-X (0.83.0). And I only set machine=tandy. My config is simply

[dosbox]
machine=tandy
[autoexec]
boot Defender_of_the_Crown.img

What happens if you use core=normal and a fixed cycle count?

I tried with core=auto and cycles=1000 and cycles=10000, and with core=normal and again cycles=1000 and cycles=10000 and could not notice any difference.
Also tried it with vanilla dosbox 0.73-3, and to me (I'm definitely no audiophile) it again all sounded the same.

It sounded just like this:
https://www.youtube.com/watch?v=ekHDC5POPwQ

TheGreatCodeholio wrote on 2020-04-16, 02:10:

_Rob wrote on 2020-04-15, 18:01:

I have the latest development build, but for this test I purposely used the last released version of DOSBox-X (0.83.0). And I on […]
Show full quote

TheGreatCodeholio wrote on 2020-04-15, 17:35:

The Tandy emulation in DOSBox-X was inherited from DOSBox SVN when the two projects forked, so it should not differ too much. The only change is to the mixer code so that rapid changes are reflected properly so that games like Skate or Die can play digitized guitar samples through one of the Tandy voices and similar changes to Adlib emulation so some old 1990-era games can play digitized speech through the Adlib FM channels.

I have the latest development build, but for this test I purposely used the last released version of DOSBox-X (0.83.0). And I only set machine=tandy. My config is simply

[dosbox]
machine=tandy
[autoexec]
boot Defender_of_the_Crown.img

What happens if you use core=normal and a fixed cycle count?

Thanks for the help, unfortunately, here are the results:
1. If I try to play using Tandy, it boots and just hangs on a blackscreen
2. When I use the EGA version, it runs but with the muffled/distorted dos-ish music/sound

I am attaching my conf settings for your reference... note that I'm using the Steam version (the DOS one).

Majinken wrote on 2020-04-16, 10:34:

Thanks for the help, unfortunately, here are the results: 1. If I try to play using Tandy, it boots and just hangs on a blackscr […]
Show full quote

TheGreatCodeholio wrote on 2020-04-16, 02:10:

_Rob wrote on 2020-04-15, 18:01:

I have the latest development build, but for this test I purposely used the last released version of DOSBox-X (0.83.0). And I on […]
Show full quote

I have the latest development build, but for this test I purposely used the last released version of DOSBox-X (0.83.0). And I only set machine=tandy. My config is simply

[dosbox]
machine=tandy
[autoexec]
boot Defender_of_the_Crown.img

What happens if you use core=normal and a fixed cycle count?

Thanks for the help, unfortunately, here are the results:
1. If I try to play using Tandy, it boots and just hangs on a blackscreen
2. When I use the EGA version, it runs but with the muffled/distorted dos-ish music/sound

I am attaching my conf settings for your reference... note that I'm using the Steam version (the DOS one).

I tried you config file, and after adjusting the autoexec part, it seems to work just fine with the PC Booter version of the game. So must be something with the DOS version...

_Rob wrote on 2020-04-16, 12:16:

Majinken wrote on 2020-04-16, 10:34:

Thanks for the help, unfortunately, here are the results: 1. If I try to play using Tandy, it boots and just hangs on a blackscr […]
Show full quote

TheGreatCodeholio wrote on 2020-04-16, 02:10:

What happens if you use core=normal and a fixed cycle count?

Thanks for the help, unfortunately, here are the results:
1. If I try to play using Tandy, it boots and just hangs on a blackscreen
2. When I use the EGA version, it runs but with the muffled/distorted dos-ish music/sound

I am attaching my conf settings for your reference... note that I'm using the Steam version (the DOS one).

I tried you config file, and after adjusting the autoexec part, it seems to work just fine with the PC Booter version of the game. So must be something with the DOS version...

Thanks! Did you get to hear what sound I'm hearing for the CGA and EGA versions? Weird thing is it only happens when I use DOSBox-X. The original fork doesn't have this problem (well maybe the sounds aren't as nice as the Tandy version and the sound also goes fast then slow at times on the original fork). At any rate, I hope this can be fixed for this fork. 😀

Majinken wrote on 2020-04-16, 10:34:

Thanks for the help, unfortunately, here are the results: 1. If I try to play using Tandy, it boots and just hangs on a blackscr […]
Show full quote

TheGreatCodeholio wrote on 2020-04-16, 02:10:

_Rob wrote on 2020-04-15, 18:01:

I have the latest development build, but for this test I purposely used the last released version of DOSBox-X (0.83.0). And I on […]
Show full quote

I have the latest development build, but for this test I purposely used the last released version of DOSBox-X (0.83.0). And I only set machine=tandy. My config is simply

[dosbox]
machine=tandy
[autoexec]
boot Defender_of_the_Crown.img

What happens if you use core=normal and a fixed cycle count?

Thanks for the help, unfortunately, here are the results:
1. If I try to play using Tandy, it boots and just hangs on a blackscreen
2. When I use the EGA version, it runs but with the muffled/distorted dos-ish music/sound

I am attaching my conf settings for your reference... note that I'm using the Steam version (the DOS one).

Try turning off the sample accurate setting. Sample accurate rendering is possible in the latest code without setting that option.

EDIT: In fact, sample accurate mode clashes badly with the PC speaker emulation because of the way PC speaker emulation was/is written.

TheGreatCodeholio wrote on 2020-04-16, 15:46:

Majinken wrote on 2020-04-16, 10:34:

Thanks for the help, unfortunately, here are the results: 1. If I try to play using Tandy, it boots and just hangs on a blackscr […]
Show full quote

TheGreatCodeholio wrote on 2020-04-16, 02:10:

What happens if you use core=normal and a fixed cycle count?

Thanks for the help, unfortunately, here are the results:
1. If I try to play using Tandy, it boots and just hangs on a blackscreen
2. When I use the EGA version, it runs but with the muffled/distorted dos-ish music/sound

I am attaching my conf settings for your reference... note that I'm using the Steam version (the DOS one).

Try turning off the sample accurate setting. Sample accurate rendering is possible in the latest code without setting that option.

EDIT: In fact, sample accurate mode clashes badly with the PC speaker emulation because of the way PC speaker emulation was/is written.

@TheGreatCodeholio: Wow! Disabling the accurate mode fixed the muffled/distorted sound. Tandy still doesn't work though 🙁 Still just the black screen... But thank you on the tip, at least the EGA/CGA now works good, just gotta figure out how to make Tandy work 😀

@_Rob: If you don't mind me asking, where did you purchase your PC Booter version? Or is it something you had from the old times?

Edit: Ok, I'm thinking that the Steam and GOG versions are cracked or hacked versions that's why the Tandy version doesn't work. However, I was able to get the bootable disk version but it included 2 disks. So I did this to my conf file...

mount c ..\games\dotc\
c:
boot DOTCEGA1.IMG DOTCEGA2.IMG

Now, when I run the game either on EGA or Tandy, it now works but I get stuck when it asks me to insert disk 2... I press CTRL+F4 to change disks but it doesn't seem to work? I also tried F11+F4... what's the shortcut to change or swap between disks in DOSBox-X?

Edit: Nevermind, got it, thanks! 😀 😀 😀 I'm now a happy camper!

Majinken wrote on 2020-04-16, 16:15:

@TheGreatCodeholio: Wow! Disabling the accurate mode fixed the muffled/distorted sound. Tandy still doesn't work though :( Still […]
Show full quote

TheGreatCodeholio wrote on 2020-04-16, 15:46:

Majinken wrote on 2020-04-16, 10:34:

Thanks for the help, unfortunately, here are the results: 1. If I try to play using Tandy, it boots and just hangs on a blackscr […]
Show full quote

Thanks for the help, unfortunately, here are the results:
1. If I try to play using Tandy, it boots and just hangs on a blackscreen
2. When I use the EGA version, it runs but with the muffled/distorted dos-ish music/sound

I am attaching my conf settings for your reference... note that I'm using the Steam version (the DOS one).

Try turning off the sample accurate setting. Sample accurate rendering is possible in the latest code without setting that option.

EDIT: In fact, sample accurate mode clashes badly with the PC speaker emulation because of the way PC speaker emulation was/is written.

@TheGreatCodeholio: Wow! Disabling the accurate mode fixed the muffled/distorted sound. Tandy still doesn't work though 🙁 Still just the black screen... But thank you on the tip, at least the EGA/CGA now works good, just gotta figure out how to make Tandy work 😀

@_Rob: If you don't mind me asking, where did you purchase your PC Booter version? Or is it something you had from the old times?

Edit: Ok, I'm thinking that the Steam and GOG versions are cracked or hacked versions that's why the Tandy version doesn't work. However, I was able to get the bootable disk version but it included 2 disks. So I did this to my conf file...

mount c ..\games\dotc\
c:
boot DOTCEGA1.IMG DOTCEGA2.IMG

Now, when I run the game either on EGA or Tandy, it now works but I get stuck when it asks me to insert disk 2... I press CTRL+F4 to change disks but it doesn't seem to work? I also tried F11+F4... what's the shortcut to change or swap between disks in DOSBox-X?

Edit: Nevermind, got it, thanks! 😀 😀 😀 I'm now a happy camper!

Thought so. The way PC speaker code renders audio works fine for the 1ms increments it normally renders but it breaks when asked to render one sample at a time.

Assuming the Tandy version is not a booter... does running LOADFIX before executing the program get it to work?

A surprising amount of DOS executables fail if loaded to low in memory, including the EXEPACK code Microsoft's Linker used which causes the "Packed file is corrupt" message. This is the reason recent commits to DOSBox-X raise the default minimum MCB segment back up to MS-DOS 7.0-like defaults.