32VKern/usr/src/sys/h/mem.h

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/*
 * "incore" memory free list
 */

struct {
	int m_free;
	short m_pnum[NICMEM];
       } mem;

int firstfree, maxfree, lastpos;
int masktab[] = {
	0x1,
	0x2,
	0x4,
	0x8,
	0x10,
	0x20,
	0x40,
	0x80,
	0x100,
	0x200,
	0x400,
	0x800,
	0x1000,
	0x2000,
	0x4000,
	0x8000,
	0x10000,
	0x20000,
	0x40000,
	0x80000,
	0x100000,
	0x200000,
	0x400000,
	0x800000,
	0x1000000,
	0x2000000,
	0x4000000,
	0x8000000,
	0x10000000,
	0x20000000,
	0x40000000,
	0x80000000,
	};