cheat lua plugins

[BernaLuke]

This is a useful information

[bandicoot]

hello
Excuse me cause i think a lot of person ask for this but don't find the way to make it possible
Is there a way to apply a cheat when we launch a rom
here's an example for a Lightgun cabinet for disable flash when we shoot
Operation wolf :
<cheat desc="Stop Screen Flashing on Shooting">
<script state="on">
<action>temp0 =maincpu.mb@001131</action>
</script>
<script state="run">
<action>maincpu.mb@001131=02</action>
</script>
<script state="off">
<action>maincpu.mb@001131=temp0 </action>
</script>
</cheat>
thanks

[jman]

In sms, cheat finder doesn't pick up work ram in maincpu.

1. boot mame with sms (eg mame sms alexkidd)
2. go to plugin options → cheat finder
3. check "cpu or ram". You can select ":sms_vdp, videoram" only. Not ":maincpu, program".

[fedekrum]

I may have found a bug in LUA plugin.

Info at https://www.mamecheat.co.uk/forums/view ... 031#p28031

[jman]

I may have found a bug in LUA plugin.

Was fixed and no problem in the latest MAME.

In sms, cheat finder doesn't pick up work ram in maincpu.

Problem is at plugins/cheatfind/init.lua - Line 308.

Code: Select all

				for num, entry in pairs(space.map.entries) do
					if entry.write.handlertype == "ram" then
						ram[#ram + 1] = {
							offset = entry.address_start & space.address_mask,
							size = (entry.address_end & space.address_mask) - (entry.address_start & space.address_mask) }
						if space.shift > 0 then
							ram[#ram].size = ram[#ram].size >> space.shift
						elseif space.shift < 0 then
							ram[#ram].size = ram[#ram].size << -space.shift
						end
					end
				end

Handlertype for target entry (0xC000 - 0xFFF7) is not "ram" but "delegate" so that it is not reserved.
If you remove or comment out "entry.write.handlertype == "ram", cheatfind picks up work ram in maincpu and searchable.
But unnecessary entries are reserved at the same time.