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a2-4am / 4sports

Total Replay II: Instant Replay
MIT License
28 stars 2 forks source link

Epyx California Games on IIe Card: Surfing Screen Garbled #18

Closed JDW1 closed 1 year ago

JDW1 commented 1 year ago

When using an Apple IIe Card running in Color Mode at 1 MHz on a Macintosh LC575 motherboard with IIe Startup 2.2.2d1, Epyx California Games loads just fine.
IMG_3727

I can then choose Surfing and play the game just fine.
IMG_3722

But when I lose, it exists to show the following garbled screen... IMG_3716

txgx42 commented 1 year ago

I am getting the same garbled screen in AppleWin, so this one at least doesn't seem to be IIe Card specific.

image

xotmatrix commented 1 year ago

Reproduced on real Apple //e.

4am crack and san inc prodos pack work OK.

peterferrie commented 1 year ago

4am crack on Asimov displays badly, too. I will find a good copy.

xotmatrix commented 1 year ago

This is weird. I've played this quite a bit now and am still unable to reproduce the problem with the 4am crack. How are you managing it, qkumba?

AppleWin_2022-12-22_00-15-57

peterferrie commented 1 year ago

It happens every time for me in both AppleWin and MAME.

peterferrie commented 1 year ago

Please share a save-state so that I can compare memory contents.

xotmatrix commented 1 year ago

This zip includes the save state, the disks, and a screenshot. This was practice mode but I get the same results with single event. Calfornia Games (4am crack) side B.aws.yaml.zip

What I noticed just now is the name is misspelled. I don't have an explanation (an earlier @a2-4am release?). I compared it to the zip on Asimov and there is a significant difference on side B, track $1D, sector $A. More digging shows it is a duplicate of sector $8, somehow written to $A by error I presume. Replacing the sector on an otherwise untouched image from the Asimov zip appears to fix the issue.

EDIT:

Oh, look at this in the crack log. I probably should have checked that first. 

               Changelog

2021-08-29

- re-issue to fix previously undetected
  data corruption on side B, T1D,S0A

2014-05-26

- initial release

I don't think that update went the way it was supposed to.

I was today years old when I realized an offset in a DSK file points to the Track/Sector like 0xTTSnn. That's what six years of paying attention gets you.

peterferrie commented 1 year ago

fixed in 87f2fcff8b76fd2a3c2fb745f84d1229d969d3a0