Subliminal Extacy
#00
01 января 1994 |
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+D and Multiface Protection
>>>>> +D and Multiface Protection <<<<< -= By Vision Of The Mad Guys Corp. =- The following two routines protect your programs to get "snaped" or "multifaced". I don't know wether you'll find this useful, but I don't like to see my programs being rubbished or hacked when they weren't supposed to. To switch off the SNAP function of the +D (only printer options will work) use the follwong Poke: POKE @161,201 If no +D is attached this will probably end with an error message, so it is better to use assembler as it then makes no difference wether a +D is attached or not: DI ;Disable interrupts IN A,(231) ;Page in +D PUSH AF ;Save A register LD A, 201 ;Equal to POKE LD (8353),A ;@161,201 POP AF ;Restore A register OUT (231),A ;Page out +D EI ;Enable interrupts RET ;Return to Basic Note that the +D ROM/RAM are exchanged when you use MC: Basic: RAM 0-8191, ROM 8192-16383 MC : RAM 8192-16383, ROM 0-8191 To disable the Multiface use the following routine: DI ;Disable interrupts IN A,(159) ;Page Multiface in LD HL,OFF ;Copy protection LD DE,8192 ;routine into LD BC,6 ;Multiface RAM LDIR IN A,(31) ;Page Multiface out EI ;Enable interrupts RET OFF DEFB 0,0,255,82,85,78 Note that the Multiface will only get disabled if it is switched on! To get around this problem the routine should run by interrupt! If the Multiface button is then pressed the program stops for a second and then continues. Tested on a Multiface 1 so other reactions might occur with other Multifaces! Michael Meyer, Struempellstr. 6/14038, 40225 Duesseldorf Germany (NOTE FROM L.A.) This is not to be used as I haven't got Vision's permission for it to be used in any of our stuff!! But Who Gives a Fuck???? - --- ----- ------- ----- --- - Bollocks, Bollocks, and more Bollocks! wey-hey! Bollocks Productions 1994! End.
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