Toaplan Arcade Garage: Zero Fire

[RealRelativeEase]

The ROMs for the home console versions can be found in \system\roms in the update section of this collection as well:

HELLFIREGEN.BIN.m
HELLFIREMD.BIN.m
HellfireS.pcd
HorrorStory.pcd
ZEROWINGGEN.BIN.m
ZEROWINGMD.BIN.m
ZeroWing.pcd

You can extract the Mega Drive ROMs using mdfTools, both versions of Zero Wing match the No-Intro entries for the retail versions, the US and Japan versions of Hellfire are a match for the Mega Drive Mini 2 versions.

The PC Engine CD images don't work out of the box with pecd-tools, here's an example of one of the error messages:

GMWare.M2.Pecd.CommandLine.exe extract ZeroWing.pcd
Error while processing: System.Collections.Generic.KeyNotFoundException: The given key 'audz' was not present in the dictionary.
   at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
   at GMWare.M2.Pecd.PecdToIsoConverter..ctor(String pecdPath, String basePath) in C:\projects\pce_mini\pecd-tool\GMWare.M2.Pecd\PecdToIsoConverter.cs:line 77
   at GMWare.M2.Pecd.CommandLine.Program.<>c__DisplayClass0_2.<<Main>b__5>d.MoveNext() in C:\projects\pce_mini\pecd-tool\GMWare.M2.Pecd.CommandLine\Program.cs:line 85
--- End of stack trace from previous location ---
   at McMaster.Extensions.CommandLineUtils.CommandLineApplicationExtensions.<>c__DisplayClass8_0.<<OnExecuteAsync>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at McMaster.Extensions.CommandLineUtils.CommandLineApplication.ExecuteAsync(String[] args, CancellationToken cancellationToken)
   at GMWare.M2.Pecd.CommandLine.Program.Main(String[] args) in C:\projects\pce_mini\pecd-tool\GMWare.M2.Pecd.CommandLine\Program.cs:line 138

I don't know enough about software to make sense of the error message. But in theory, it should be possible to extract these games by modifying pecd-tools, right?