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VCCE / VCC

Tandy Color Computer 3 Emulator
GNU General Public License v3.0
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Vcc crash on selecting quit from Virtual program #175

Closed Ralph423 closed 3 months ago

Ralph423 commented 4 months ago

I often get a crash from exiting TW128-HD. Not from TW128, or TW80.

Description Faulting Application Path: C:\Users\GP_2\Desktop\VCC\Vcc.exe

Problem signature Problem Event Name: APPCRASH Application Name: Vcc.exe Application Version: 2.1.8.2 Application Timestamp: 6567ab21 Fault Module Name: Vcc.exe Fault Module Version: 2.1.8.2 Fault Module Timestamp: 6567ab21 Exception Code: c0000005 Exception Offset: 0006e363 OS Version: 10.0.19045.2.0.0.768.101 Locale ID: 1033 Additional Information 1: 2beb Additional Information 2: 2beba6fb4680d73a8c78ca7c24ccdb46 Additional Information 3: cf47 Additional Information 4: cf47bb3890b24e55821fcecda3da7dd4

Extra information about the problem Bucket ID: 2c9a1826a9f6f1f91ab61235b7ba9b15 (1924745912672492309)

ejaquay commented 4 months ago

How to reproduce. What is TW128-HD?

Exception address 0006e363 is probably in tccgraphics.c near line 6333 but there is no obvious instruction there that would cause an access violation. Unfortuanatly this is an not the current version of VCC so debugging information is not availiable.

BGPierce commented 4 months ago

TW128 HD is Telewriter 128 recoded for the Coco3. I think the HD is where they fixed the problem with Telewriter being hard coded for drives 0 & 1, allowing use of any drives, including hard drives. There should be a copy in the Coco Archives. On Sunday, February 11, 2024 at 08:57:10 PM EST, Ed Jaquay @.***> wrote:

How to reproduce. What is TW128-HD?

Exception address 0006e363 is probably in tccgraphics.c near line 6333 but there is no obvious instruction there that would cause an access violation. Unfortuanatly this is an not the current version of VCC so debugging information is not availiable.

— Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you are subscribed to this thread.Message ID: @.***>

Ralph423 commented 4 months ago

The Crash happens on selecting quit from TW128-HD installed on Virtual Hard drive systems. Still get crash after updating to latest portable version of Vcc.

Source Vcc

Summary Stopped working

Date ‎2/‎11/‎2024 7:53 PM

Status Report sent

Description Faulting Application Path: C:\Users\GP_2\Desktop\VCC\Vcc.exe

Problem signature Problem Event Name: APPCRASH Application Name: Vcc.exe Application Version: 2.1.8.3 Application Timestamp: 65b802fc Fault Module Name: Vcc.exe Fault Module Version: 2.1.8.3 Fault Module Timestamp: 65b802fc Exception Code: c0000005 Exception Offset: 0006f323 OS Version: 10.0.19045.2.0.0.768.101 Locale ID: 1033 Additional Information 1: 2beb Additional Information 2: 2beba6fb4680d73a8c78ca7c24ccdb46 Additional Information 3: cf47 Additional Information 4: cf47bb3890b24e55821fcecda3da7dd4

Extra information about the problem Bucket ID: a748bd60202a948cc85c9a8d3edc9273 (1755447886203359859)

ejaquay commented 4 months ago

Debugger associates the exception offset with line 6317 of tcc1014graphics.c This code line is used to update the display and the exception is likely caused by a bad index to the hires surface array. I can not get the error to occur on my PC but that does not mean it will not occur with other video hardware or os version. I can add code to force the calculated index to fit in the array and that should prevent the crash.

Ralph423 commented 3 months ago

I found that no crash happens when using virtual floppy to load TW80-HD. I have only tested on RSDOS, and RGBDOS. Probably not worth the effort to fix this minor, and rare issue.