WebSVN – pentevo – Blame – /fpga/current/sim_top/nmitest.src

Rev	Author	Line No.	Line
713	lvd	1	ORG #8000
		2	DISP 0
		3
		4	JP INIT
		5
		6	DS #0038-$
		7
		8	INT EI
		9	RET
		10
		11	DS #0066-$
		12
		13	NMI
		14	NOP
		15	JR $
		16
		17
		18
		19	INIT XOR A
		20	LD BC,#7FFD
		21	OUT (C),A
		22
		23	LD A,#3F-#1F ; ROM page #1F
		24	LD BC,#3FF7
		25	OUT (C),A
		26
		27	LD BC,#FD77
		28	LD A,#FB ;6912 mode, 14MHz turbo, enable memmanager
		29	OUT (C),A ;shadow on
		30
		31	XOR A ;RAM page FF to C000-FFFF
		32	LD BC,#FFF7
		33	OUT (C),A
		34	LD B,#F7
		35	OUT (C),A
		36
		37	LD SP,#FFFF ;stack
		38
		39
		40	;test INT
		41	IM 1
		42	EI
		43	HALT
		44	DI
		45
		46
		47	LD HL,NMICODE
		48	LD DE,#C066
		49	LD BC,ENMICODE-NMICODE
		50	LDIR
		51
		52
		53	LD A,#08 ;gen NMI
		54	OUT (#BF),A
		55	XOR A
		56	OUT (#BF),A
		57
		58
		59	OR A ;wait NMI
		60	JP Z,$-1
		61
		62
		63
		64	JP #C066+NMIGENRAM-NMICODE
		65
		66	NMICODE
		67	NOP
		68	INC A
		69	OUT (#BE),A
		70	RETN
		71
		72	NMIGENRAM
		73	LD A,#08 ;gen NMI
		74	OUT (#BF),A
		75	XOR A
		76	OUT (#BF),A
		77
		78
		79	OR A ;wait NMI
		80	JR Z,$-1
		81
		82	JR NMIGENRAM
		83
		84	ENMICODE
		85	?

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