Update assembly instructions, fix v1.12EU

README.md

@@ -43,10 +43,10 @@ However, it also means that unlike the other implementations, a custom CD image
 
 ## Compilation
 
-`TPLSTSR4` (unlike the previous version) is a plain old `MZ` executable, so you can assemble it with MASM, JWASM, UASM, etc.
+`TPLSTSR4` (unlike the previous version) is a plain old `MZ` executable. However, because of the peculiar way I've used groups in the code, a lot of assemblers seem to miscalculate certain offsets. [JWasm](https://github.com/Baron-von-Riedesel/JWasm) v2.14 or greater will assemble the TSR correctly, and it can run on Windows, DOS or Linux.
 
 ```
-uasm -mz TPLSTSR4.ASM
+jwasm -mz TPLSTSR4.ASM
 ```
 
 It will warn about no stack being defined, but it should still produce a working `TPLSTSR4.EXE` in DOS `MZ` format.

TPLSTSR4.ASM

@@ -711,6 +711,9 @@ setup_payload	proc near	uses gs ds dx es edi cx ax bx si
 	mov	gs:[pPerdu],(1ADEEh-81508h)		; @ 0x1ADEE
 	mov	gs:[pPlayTrack],(283D8h-81508h)		; @ 0x283D8
 
+	; This version has DRM that involves checking files on the CD
+	bts	cs:[statusword],2
+
 @@payload_fixedup:
 	; Next we need to open up Rayman's config file and get the driver ID
 	mov	ax,3D00h	; OPEN read-only