Detecting Euphoric

If you want to ask questions about how the machine works, peculiar details, the differences between models, here it is !
How to program the oric hardware (VIA, FDC, ...) is also welcome.
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Twilighte
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Detecting Euphoric

Post by Twilighte » Sun Mar 26, 2006 12:40 am

The following code can be used to detect whether the system is an Emulator or not.

Code: Select all

*=$500
;Will return Carry if Real Machine
is_real	lda #00
	sta $30F
	lda #$FF
	sta $030C
	;Set CB2 to Pulse Mode
	lda #%10111101
	sta $030c
	lda #$F3	;Random value
	sta $030F
	lda $0300
	lda #$dd
	sta $030C
	lda #$DF
	sta $030C
	lda $030F
	cmp #$f3
	beq skip1
	clc
skip1	rts
It uses an obscure VIA mode that selects handshaking of CB2 when writing or reading from Port B.
I use it to write a value to the AY sound chip.
The routine then reads back data from the same AY register (0) and if it isn't the same then Euphoric is being used.

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Dbug
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Post by Dbug » Sun Mar 26, 2006 11:49 am

I'm pretty sure that we will soon see a new version of Euphoric that will actually behave in a way you will not be able to detect that anymore :D

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