How to detect 020 or upwards CPUs with asm?

Tigerskunk · 30 April 2021, 18:44

See title.

Want to check if I have a beefier machine at disposal to work with for some extra effects.

a/b · 30 April 2021, 19:11

execbase.i:

Code:

	UWORD	AttnFlags	; special attention flags (readable)

******* Bit defines for AttnFlags (see above) *******************************

*  Processors and Co-processors:
	BITDEF	AF,68010,0	; also set for 68020
	BITDEF	AF,68020,1	; also set for 68030
	BITDEF	AF,68030,2	; also set for 68040
	BITDEF	AF,68040,3
	BITDEF	AF,68881,4	; also set for 68882
	BITDEF	AF,68882,5
	BITDEF	AF,FPU40,6	; Set if 68040 FPU
; 060 = bit 7

AttnFlags = $128.W, lower byte $129 is what you want. So move.l 4.w,a6 and then grab $129(a6).

ross · 30 April 2021, 19:20

Phase5 added also bit7 for 68060

EDIT: ah! seems that the best source is AROS:

Code:

/* AttnFlags */
/* Processors */
#define AFB_68010       0
#define AFB_68020       1
#define AFB_68030       2
#define AFB_68040       3
#define AFB_68060       7
#define AFB_AP68080     9
/* Co-Processors */
#define AFB_68881       4
#define AFB_68882       5
#define AFB_FPU40       6
--cut--

Tigerskunk · 01 May 2021, 07:41

Thanks mates, you are the best...

30 April 2021, 18:44	#1
Tigerskunk Inviyya Dude! Join Date: Sep 2016 Location: Amiga Island Posts: 2,770	How to detect 020 or upwards CPUs with asm? See title. Want to check if I have a beefier machine at disposal to work with for some extra effects.

30 April 2021, 19:20	#3
ross Defendit numerus Join Date: Mar 2017 Location: Crossing the Rubicon Age: 53 Posts: 4,468	Phase5 added also bit7 for 68060 EDIT: ah! seems that the best source is AROS: Code: /* AttnFlags / / Processors / #define AFB_68010 0 #define AFB_68020 1 #define AFB_68030 2 #define AFB_68040 3 #define AFB_68060 7 #define AFB_AP68080 9 / Co-Processors / #define AFB_68881 4 #define AFB_68882 5 #define AFB_FPU40 6 --cut-- Last edited by ross; 30 April 2021 at 20:02.*

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