[ELWSS] Sub Striker - MBBSEmu crashes when connecting

[tuday2]

Module Information

• Identifier: ELWSS
• Module Name: Sub Striker
• Version: 1.03b

Describe the bug MBBSEmu crashes when connecting to telnet (only 1 module loaded)

To Reproduce Steps to reproduce the behavior:

1. Add module to moduleConfig.json
2. Load MBBSEmu
3. Connect to telnet port
4. See error

Expected behavior Module loads and able to connect to BBS

Screenshots

Unhandled exception. System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values. (Parameter 'Unable to locate FFFF:02E1')
   at MBBSEmu.Memory.MemoryCore.GetWord(UInt16 segment, UInt16 offset)
   at MBBSEmu.HostProcess.ExecutionUnits.ExecutionUnit.Execute(IntPtr16 entryPoint, UInt16 channelNumber, Boolean simulateCallFar, Boolean bypassState, Queue`1 initialStackValues, UInt16 initialStackPointer)
   at MBBSEmu.Module.MbbsModule.Execute(IntPtr16 entryPoint, UInt16 channelNumber, Boolean simulateCallFar, Boolean bypassSetState, Queue`1 initialStackValues, UInt16 initialStackPointer)
   at MBBSEmu.HostProcess.MbbsHost.WorkerThread()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()

Software Information:

• OS: Windows 2019 Server Standard
• Telnet Client: NetRunner

[enusbaum]

Ordinal MAJORBBS.737 is _8087 which looks to signal to the program if an x87 math co-processor is present.

In this case, it appears we can return a constant of 3 to denote the presence of an x87 FPU and process the FPU command FCOS normally.