Re: Closing DOSBox.

Posted on 2008-10-24, 21:02

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by ripsaw8080

in DOSBox General

in DOSBox General

If you're going to go with putting an "exit" in the top level batch file, you need to put "call" in front of all batch file "subroutines", so in gusdcs you need to change it to "call gn", and so forth, or it won't "return" back up the chain.

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Re: About modified date for files

Posted on 2008-10-23, 22:32

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by ripsaw8080

in DOSBox General

in DOSBox General

Real DOS will preserve the date/time stamp, but DOSBox's lack of support for it isn't really a bug, just something that isn't implemented. There may even be some rationale for it being a good thing that the stamps are changed. ykhwong's build of DOSBox has support for altering file date/time stamps …

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Re: MIDI input patch

Posted on 2008-10-23, 21:57

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by ripsaw8080

in DOSBox Development

in DOSBox Development

You might not want to use debug builds where timing is important. I have found the debugger creates some problems. Callbacks (DOSBox's internal replacement for some software interrupts), cause the timer to lose ticks, and the more often they are called, the worse the effect. As an example, playing …

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Re: ''' sıɥʇ ǝʞıן ǝdʎʇ oʇ ʍoɥ uɹɐǝן oʇ ʇuɐʍ noʎ ɟı

Posted on 2008-10-23, 20:41

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by ripsaw8080

in Milliways

in Milliways

Not necessarily IE's fault, more likely the lack of Unicode support on a decade-old OS.

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Re: ''' sıɥʇ ǝʞıן ǝdʎʇ oʇ ʍoɥ uɹɐǝן oʇ ʇuɐʍ noʎ ɟı

Posted on 2008-10-23, 13:13

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by ripsaw8080

in Milliways

in Milliways

b-q, d-p, n-u, o, s, x, z - don't need special characters; analytical much? sɹǝqɯnu ɹo sdɐɔ ou s,ǝɹǝɥʇ pɐq ooʇ

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Re: Confused..Old games + Mac = playable?

Posted on 2008-10-21, 22:40

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by ripsaw8080

in DOS

in DOS

Topic 19803 Old games + macs = playable? Folks, poter is a thread spammer, don't let him waste your time with well-intentioned responses.

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Re: proper filters for dosbox (supporting correct ratio)

Posted on 2008-10-20, 09:49

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by ripsaw8080

in DOSBox General

in DOSBox General

Hmm, they seem to support 4:3 aspect ratios for me... are you, perhaps, not setting aspect=true in the config file? Although I do think aspect correction doesn't look good with scanlines; too much variation in intensity of the lines.

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Re: MPU-401 playback problem with Cakewalk 3.0 sequencer

Posted on 2008-10-20, 09:40

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by ripsaw8080

in DOSBox Development

in DOSBox Development

Your fix actually does work, but you had one little mistake: it should be checking value[0]==0xfc, not value[1] ... sorry for not noticing sooner. My change was inadvertently blocking the subsequent 0xF9; yours prevents it entirely by avoiding the critical line: Copy code to clipboard 1 mpu.state. …

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Re: Mouse problem

Posted on 2008-10-20, 02:01

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

The attached program will completely disable the mouse if you run it inside DOSBox before running anything else. Note that it is not fancy, and does not provide a way to re-enable the mouse other than to restart DOSBox. At least you'll be able to determine if the mouse is the cause of your problem. …

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Re: MPU-401 playback problem with Cakewalk 3.0 sequencer

Posted on 2008-10-20, 01:40

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by ripsaw8080

in DOSBox Development

in DOSBox Development

I implemented the changes you describe, but the hangs still occur with them. I see what you are saying about block_ack, so it appears the change I made is having a more complicated effect than I thought. I put a "case 0xfc: return;" in MPU401_WriteCommand, which prevents QueueByte from being called, …

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Re: MPU-401 playback problem with Cakewalk 3.0 sequencer

Posted on 2008-10-19, 22:20

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by ripsaw8080

in DOSBox Development

in DOSBox Development

It is not very straightforward how the problem comes about, so it may be the case that preventing the ACK merely works around the problem, and isn't the source of it. However, I've played a fair amount of MIDI data through it now with no problems, so it is at least an effective workaround. The 0xFC …

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MPU-401 playback problem with Cakewalk 3.0 sequencer

Posted on 2008-10-18, 14:47

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by ripsaw8080

in DOSBox Development

in DOSBox Development

I've recently been trying to find the source of a problem playing MIDI data from the Cakewalk 3.0 sequencer for DOS running in DOSBox using the MPU-401 intelligent mode. The problem is that at some point during playing the program gets stuck in a loop with a hanging note still sounding. These hangs …

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Re: Old games + macs = playable?

Posted on 2008-10-15, 23:19

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by ripsaw8080

in DOSBox General

in DOSBox General

You could use Boot Camp to install an XP partition, or go with a virtual machine like VMWare Fusion or Parallels.

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Re: Hi-Tech Expressions Matter horn Screemer

Posted on 2008-10-15, 04:52

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

Game tries to chain off INT 0x74, and DOSBox 0.72 is not allowing its interrupt table address to be changed (overwrites with its own handler address when an INT is called). Latest CVS allows the interrupt table address to be changed, and game appears to work OK with it.

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Re: Changing dos screen colors and Pacmania sound.

Posted on 2008-10-11, 17:55

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by ripsaw8080

in DOSBox General

in DOSBox General

For the screen colors, DOSBox has an internal ANSI driver which can change the colors through escape sequences. It's a bit technical, but not rocket science: http://ascii-table.com/ansi-escape-sequences.php Pacmania uses the PC speaker, which I don't think VDMSound does anything with. Under the …

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Re: Installing From multi floppys

Posted on 2008-10-10, 21:05

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

Maybe you should just use ScummVM instead for this game Still have to get the game data files out of their installation packaging for ScummVM. ;) The installer may be looking for labels on the floppy disks, in which case there might be no easy solution unless you can write out the images to …

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Re: cpu grp5 illegal call 7

Posted on 2008-10-03, 22:05

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

I had an idea of how to make this game more DOSBox-friendly, but it involved hacking the executable, and that's not the best approach. I took the same general idea and turned it into a patch loader program that makes the necessary modifications in memory, so nothing is permanently changed. Run …

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Re: cpu grp5 illegal call 7

Posted on 2008-10-02, 22:11

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

It is a known issue: Mirage Thunder: Dif-2 and the mysterious opcode... There are good reasons for not supporting the intentional use of illegal CPU instructions.

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Re: Xcom Apocalypse freeze problem in Dosbox 0.72

Posted on 2008-10-01, 10:23

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

Not sure how useful this might be, but I forced the game out of its loop with the debugger and then saved the game right at the start of the new day. Nothing seems wrong with the game, and subsequent day changes didn't lock up on me, but it's obviously quite possible something isn't right about it. …

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Re: Xcom Apocalypse freeze problem in Dosbox 0.72

Posted on 2008-09-30, 22:03

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

It locks up after midnight by the game's clock, not by the system clock, right after you exit the status report and go back to the city view. Using the debugger version of DOSBox 0.72, nothing out of the ordinary appears to be going on: the game is not executing invalid opcodes or showing typical …

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