ProDOS 2.4.2 BUG FIX for issue preventing A2osX 0.94 from starting

[bobbimanners]

Description

There is a problem in ProDOS 2.4.2 which prevents A2OSX.SYSTEM from launching correctly. This affects the most recent test version of A2osX, version 0.94.

The A2osX project has identified the issue and patched PRODOS. This fix has been verified to correct the problem. It would be good to upstream it.

Expected Behavior

A2OSX.SYSTEM should launch.

Actual Behavior

A2OSX.SYSTEM crashes during launch.

Possible Fix

I will attach a screenshot of Slack chat with the details of the fix.

Steps to Reproduce

1. Download a recent test release of A2osX (v0.94).
2. Boot ProDOS 2.4.2
3. Try launching /FULLBOOT/A2OSX.SYSTEM.

Context

Trying to run the awesome A2osX :)

Your Environment

ProDOS 2.4.2

Hardware:

Enhanced Apple //e
Ultrawarp
GW 8MB Aux slot RAM
Uthernet-II
MicroDrive/Turbo

ProDOS8 version:

2.4.2

Non-Operating System release software being used:

A2osX 0.94 test release.

[bobbimanners]

Details of fix.

[bobbimanners]

The PRODOS system file on this disk image has the patch applied:
ADTPRO-2.1.0.dsk.zip

ADTPRO-2.1.0.dsk /ADTPRO.2.1.0/
PRODOS SYS 17,128 Locked
BASIC SYS 10,240 Locked
STARTUP.SYSTEM SYS 1,034
ADTPRO SYS 348
ADTPROAUD SYS 348
ADTPROETH SYS 348
ADTPRO.BIN BIN 14,205
ADTPROAUD.BIN BIN 17,008
ADTPROETH.BIN BIN 19,205
ProDOS format; 55,296 bytes free; 88,064 bytes used.

[JohnMBrooks]

Fixed in 2.4.3

[wyatt-wong]

Would it be possible to reuse address $BF4B and $BF4C instead of just replaced them by 2 NOPs ?