+
+#define KSP 0x0 /* kernel stack pointer */
+#define ESP 0x1 /* exec stack pointer */
+#define SSP 0x2 /* supervisor stack pointer */
+#define USP 0x3 /* user stack pointer */
+#define ISP 0x4 /* interrupt stack pointer */
+#define P0BR 0x8 /* p0 base register */
+#define P0LR 0x9 /* p0 length register */
+#define P1BR 0xa /* p1 base register */
+#define P1LR 0xb /* p1 length register */
+#define SBR 0xc /* system segment base register */
+#define SLR 0xd /* system segment length register */
+#define PCBB 0x10 /* process control block base */
+#define SCBB 0x11 /* system control block base */
+#define IPL 0x12 /* interrupt priority level */
+#define ASTLVL 0x13 /* async. system trap level */
+#define SIRR 0x14 /* software interrupt request */
+#define SISR 0x15 /* software interrupt summary */
+#if VAX8200
+#define IPIR 0x16 /* interprocessor interrupt register */
+#endif
+#if VAX750 || VAX730
+#define MCSR 0x17 /* machine check status register */
+#endif
+#define ICCS 0x18 /* interval clock control */
+#define NICR 0x19 /* next interval count */
+#define ICR 0x1a /* interval count */
+#if VAX8600 || VAX8200 || VAX780 || VAX750 || VAX730 || VAX650
+#define TODR 0x1b /* time of year (day) */
+#endif
+#if VAX750 || VAX730
+#define CSRS 0x1c /* console storage receive status register */
+#define CSRD 0x1d /* console storage receive data register */
+#define CSTS 0x1e /* console storage transmit status register */
+#define CSTD 0x1f /* console storage transmit data register */
+#endif
+#define RXCS 0x20 /* console receiver control and status */
+#define RXDB 0x21 /* console receiver data buffer */
+#define TXCS 0x22 /* console transmitter control and status */
+#define TXDB 0x23 /* console transmitter data buffer */
+#if VAX8200 || VAX750 || VAX730 || VAX650
+#define TBDR 0x24 /* translation buffer disable register */
+#define CADR 0x25 /* cache disable register */
+#define MCESR 0x26 /* machine check error summary register */
+#endif
+#if VAX750 || VAX730 || VAX650
+#define CAER 0x27 /* cache error */
+#endif
+#define ACCS 0x28 /* accelerator control and status */
+#if VAX780
+#define ACCR 0x29 /* accelerator maintenance */
+#endif
+#if VAX8200 || VAX780
+#define WCSA 0x2c /* WCS address */
+#define WCSD 0x2d /* WCS data */
+#endif
+#if VAX8200
+#define WCSL 0x2e /* WCS load */
+#endif
+#if VAX8600 || VAX780
+#define SBIFS 0x30 /* SBI fault and status */
+#define SBIS 0x31 /* SBI silo */
+#define SBISC 0x32 /* SBI silo comparator */
+#define SBIMT 0x33 /* SBI maintenance */
+#define SBIER 0x34 /* SBI error register */
+#define SBITA 0x35 /* SBI timeout address */
+#define SBIQC 0x36 /* SBI quadword clear */
+#endif
+#if VAX750 || VAX730 || VAX630 || VAX650
+#define IUR 0x37 /* init unibus (Qbus on 6x0) register */
+#endif
+#define MAPEN 0x38 /* memory management enable */
+#define TBIA 0x39 /* translation buffer invalidate all */
+#define TBIS 0x3a /* translation buffer invalidate single */
+#if VAX750 || VAX730
+#define TB 0x3b /* translation buffer */
+#endif
+#if VAX780
+#define MBRK 0x3c /* micro-program breakpoint */
+#endif
+#define PMR 0x3d /* performance monitor enable */
+#define SID 0x3e /* system identification */
+#if VAX8600 || VAX8200 || VAX650
+#define TBCHK 0x3f /* Translation Buffer Check */
+#endif
+#if VAX8600
+#define PAMACC 0x40 /* PAMM access */
+#define PAMLOC 0x41 /* PAMM location */
+#define CSWP 0x42 /* Cache sweep */
+#define MDECC 0x43 /* MBOX data ecc register */
+#define MENA 0x44 /* MBOX error enable register */
+#define MDCTL 0x45 /* MBOX data control register */
+#define MCCTL 0x46 /* MBOX mcc control register */
+#define MERG 0x47 /* MBOX error generator register */
+#define CRBT 0x48 /* Console reboot */
+#define DFI 0x49 /* Diag fault insertion register */
+#define EHSR 0x4a /* Error handling status register */
+#define STXCS 0x4c /* Console block storage C/S */
+#define STXDB 0x4d /* Console block storage D/B */
+#define ESPA 0x4e /* EBOX scratchpad address */
+#define ESPD 0x4f /* EBOX sratchpad data */
+#endif
+#if VAX8200
+#define RXCS1 0x50 /* receive csr, console line 1 */
+#define RXDB1 0x51 /* receive data buffer, console line 1 */
+#define TXCS1 0x52 /* transmit csr, console line 1 */
+#define TXDB1 0x53 /* transmit data buffer, console line 1 */
+#define RXCS2 0x54 /* etc */
+#define RXDB2 0x55
+#define TXCS2 0x56
+#define TXDB2 0x57
+#define RXCS3 0x58
+#define RXDB3 0x59
+#define TXCS3 0x5a
+#define TXDB3 0x5b
+#define RXCD 0x5c /* receive console data register */
+#define CACHEX 0x5d /* cache invalidate register */
+#define BINID 0x5e /* VAXBI node ID register */
+#define BISTOP 0x5f /* VAXBI stop register */
+#endif