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Jarvik7 / dosbox-wii

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TANDY emulation issues #10

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. Edit dosbox.conf to emulate a Tandy system instead of VGA etc.
2. Try running certain software for the Tandy 1000 - for example, run an 
old Sierra AGI game like King's Quest 1-3 or Space Quest 1-2.

What is the expected output? What do you see instead?

While the Tandy emulation works insofar as the Tandy 3-voice sound and 
emulation of other system foibles is fine, it seems like some software 
designed with a Tandy 1000-related video mode in mind does not output 
correct video. Personal Deskmate 2, which requires a Tandy machine and 
does not display on EGA/VGA and up systems, works fine, oddly enough, but 
a Monopoly game from back in the day that I own does not. The easiest 
example to see, though, is Sierra AGI. Under a normal VGA machine the AGI 
games will give you correct video but only PC speaker audio. Under the 
Tandy machine the fuller 3-voice sound will be present but the video will 
have black vertical bars interrupting it, almost as if a "jail cell" 
effect was going on. The Monopoly game (which as far as I know was 
intended for free back in the day other than paying for S&H on the floppy) 
shows differently corrupted video, however.

Does the issue occur on the latest DOSBox for Windows?

Both Monopoly and AGI games work fine for me on the Windows DOSBox .72.

What version of the product are you using? On what operating system?

DOSBox for the Wii, based on version 0.72 of the DOSBox code.

Please provide any additional information below.

As I said, I can provide the Monopoly game if people feel comfortable with 
me doing so. I don't want to attach it until I know it's kosher to do so.

Original issue reported on code.google.com by slipg...@gmail.com on 25 May 2009 at 5:14

GoogleCodeExporter commented 9 years ago 
I noticed the same thing while playing Starflight in Tandy mode. I have a real 
Tandy
1000 also, so I know how it should look.

Original comment by DaG...@gmail.com on 31 May 2009 at 2:28

GoogleCodeExporter commented 9 years ago 
I'd like to re-raise this issue. I still have the visual issues with DOSBox I 
described when using Tandy mode.

Original comment by slipg...@gmail.com on 16 Jan 2010 at 5:04

GoogleCodeExporter commented 9 years ago 
Here's something that may actually help people looking for this. I'm attaching 
three 
files. One is "glitchy tandy visual.jpg" which is a photo I took of my TV 
screen 
with my camera to let you know what I'm talking about. "intended 
appearance.jpg" is 
how the picture is SUPPOSED to look (captured in this case from my SVGA 
configuration of DOSBox Wii). I'm attaching the dosbox.conf from my Tandy 
configuration so that people can see if maybe an issue is there that can be 
resolved. (I can't be 100% sure, but I think the amount of visual bars 
phenomenon 
has increased or decreased as I've toyed with the config, but it's never gone 
completely away.)

To repeat an important note from the original issue I reported, I can run Tandy 
mode 
with no visual issues like this on the PC, and I'm trying to do likewise with 
the 
Wii.

Original comment by slipg...@gmail.com on 16 Jan 2010 at 5:28

Attachments:

GoogleCodeExporter commented 9 years ago 
If needed, I can try to take pics of images of what the games should look like 
on a
real Tandy 1000, so you can make it look how it should look.

Original comment by DaG...@gmail.com on 17 Jan 2010 at 4:25

GoogleCodeExporter commented 9 years ago 
sorry, can't help you here.

Original comment by dborth@gmail.com on 24 Jun 2010 at 2:56