promvec (%i0) - arch/sparc/include/bsd_openprom.h
00	0x10010407
04	int pv_romvec_vers
08	int pv_plugin_vers
0c	int pv_printrev
	struct v0mem pv_v0mem "V0: Memory description lists"
		struct v0mem:
10			struct v0mlist **v0_phystot
14			struct v0mlist **v0_vmprom
18			struct v0mlist *v0_physavail
1c	struct nodeops *pv_nodeops
	struct nodeops:
	00	int (*no_nextnode)(int);
	04	int (*no_child)(int);
	08	int (*no_proplen)(int, char *);
	0c	int (*no_getprop)(int, char *, void *);
	10	int (*no_setprop)(int, chr *, void *, int);
	14	char *(*no_nextprop)(int, char *);
20	char **pv_bootstr
	struct v0devops pv_v0devops;
		struct v0devops:
24			int (*v0_open)(char *);
28			int (*v0_close)(int);
2c			int (*v0_rbdev)(int, int, int, void *);
30			int (*v0_wbdev)(int, int, int, void *);
34			int (*v0_wnet)(int, int, void *);
38			int (*v0_rnet)(int, int, void *);
3c			int (*v0_rcdev)(int, int, int, void *);
40			int (*v0_wcdev)(int, int, int, void *);
44			int (*v0_seek)(int, long, int);
48	char *pv_stdin
4c	char *pv_stdout
above two: 0 for screen/kbd, 1 for ttya, 2 for ttyb
50	int (*pv_getchar)(void); // blocking
54	void (*pv_putchar)(int); // blocking
58	int (*pv_nbgetchar)(void); // nonblocking, -1 on error
5c	int (*pv_nbputchar)(int); // nonblocking, -1 on error
60	void (*pv_putstr)(char *, int); // may be very slow
64	void (*pv_reboot)(char *);
68	void (*pv_printf)(const char *, ...);
6c	void (*pv_abort)(void);
70	int *pv_ticks;
74	void (*pv_halt)(void);
78	void (**pv_synchook)(void);
7c	function pointer to eval a FORTH string
80	struct v0bootargs **pv_v0bootargs;
84	function pointer to get Ethernet MAC
	struct v2bootargs pv_v2bootargs
		struct v2bootargs:
88			char **v2_bootpath;
8c			char **v2_bootargs;
90			int *v2_fd0; // stdin
94			int *v2_fd1; // stdout
	strct v2devops pv_v2devops
		struct v2devops
98			int (*v2_fd_phandle)(int); // instance handle to package handle
9c			void *(*v2_malloc)(caddr_t, u_int);
a0			void (*v2_free)(caddr_t, u_int);
a4			caddr_t (*v2_mmap)(caddr_t, int, u_int, u_int);
a8			void (*v2_munmap)(caddr_t, u_int);
ac			int (*v2_open)(char *);
b0			void (*v2_close)(int);
b4			int (*v2_read)(int, void *, int);
b8			int (*v2_write)(int, void *, int); <-- used for v2_putchar, pass *v2_fd1 as first arg
bc			int (*v2_seek)(int, int, int);
c0			void (*v2_chain)(void);
c4			void (*v2_release)(void);




nodeops
	int (*no_nextnode)(int);
	int (*no_firstchild)(int);
	int (*no_proplen)(int, char *);
	int (*no_getprop)(int, char *, void *);
	int (*no_setprop)(int, char *, void *, int);
	char *(*no_nextprop)(int, char *);