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1.1 ! root 1: /* ! 2: * hp100.h: Hewlett Packard HP10/100VG ANY LAN ethernet driver for Linux. ! 3: * ! 4: * Author: Jaroslav Kysela, <[email protected]> ! 5: * ! 6: * Header file... ! 7: * ! 8: * This driver is based on the 'hpfepkt' crynwr packet driver. ! 9: * ! 10: * This source/code is public free; you can distribute it and/or modify ! 11: * it under terms of the GNU General Public License (published by the ! 12: * Free Software Foundation) either version two of this License, or any ! 13: * later version. ! 14: */ ! 15: ! 16: /**************************************************************************** ! 17: * Hardware Constants ! 18: ****************************************************************************/ ! 19: ! 20: /* ! 21: * ATT2MD01 Register Page Constants ! 22: */ ! 23: ! 24: #define HP100_PAGE_PERFORMANCE 0x0 /* Page 0 */ ! 25: #define HP100_PAGE_MAC_ADDRESS 0x1 /* Page 1 */ ! 26: #define HP100_PAGE_HW_MAP 0x2 /* Page 2 */ ! 27: #define HP100_PAGE_EEPROM_CTRL 0x3 /* Page 3 */ ! 28: #define HP100_PAGE_MAC_CTRL 0x4 /* Page 4 */ ! 29: #define HP100_PAGE_MMU_CFG 0x5 /* Page 5 */ ! 30: #define HP100_PAGE_ID_MAC_ADDR 0x6 /* Page 6 */ ! 31: #define HP100_PAGE_MMU_POINTER 0x7 /* Page 7 */ ! 32: ! 33: /* ! 34: * ATT2MD01 Register Addresses ! 35: */ ! 36: ! 37: /* Present on all pages */ ! 38: ! 39: #define HP100_REG_HW_ID 0x00 /* R: (16) Unique card ID */ ! 40: #define HP100_REG_TRACE 0x00 /* W: (16) Used for debug output */ ! 41: #define HP100_REG_PAGING 0x02 /* R: (16),15:4 Card ID */ ! 42: /* W: (16),3:0 Switch pages */ ! 43: #define HP100_REG_OPTION_LSW 0x04 /* RW: (16) Select card functions */ ! 44: #define HP100_REG_OPTION_MSW 0x06 /* RW: (16) Select card functions */ ! 45: ! 46: /* Page 0 - Performance */ ! 47: ! 48: #define HP100_REG_IRQ_STATUS 0x08 /* RW: (16) Which ints are pending */ ! 49: #define HP100_REG_IRQ_MASK 0x0a /* RW: (16) Select ints to allow */ ! 50: #define HP100_REG_FRAGMENT_LEN 0x0c /* RW: (16)12:0 Current fragment len */ ! 51: #define HP100_REG_OFFSET 0x0e /* RW: (16)12:0 Offset to start read */ ! 52: #define HP100_REG_DATA32 0x10 /* RW: (32) I/O mode data port */ ! 53: #define HP100_REG_DATA16 0x12 /* RW: WORDs must be read from here */ ! 54: #define HP100_REG_TX_MEM_FREE 0x14 /* RD: (32) Amount of free Tx mem */ ! 55: #define HP100_REG_RX_PKT_CNT 0x18 /* RD: (8) Rx count of pkts on card */ ! 56: #define HP100_REG_TX_PKT_CNT 0x19 /* RD: (8) Tx count of pkts on card */ ! 57: ! 58: /* Page 1 - MAC Address/Hash Table */ ! 59: ! 60: #define HP100_REG_MAC_ADDR 0x08 /* RW: (8) Cards MAC address */ ! 61: #define HP100_REG_HASH_BYTE0 0x10 /* RW: (8) Cards multicast filter */ ! 62: ! 63: /* Page 2 - Hardware Mapping */ ! 64: ! 65: #define HP100_REG_MEM_MAP_LSW 0x08 /* RW: (16) LSW of cards mem addr */ ! 66: #define HP100_REG_MEM_MAP_MSW 0x0a /* RW: (16) MSW of cards mem addr */ ! 67: #define HP100_REG_IO_MAP 0x0c /* RW: (8) Cards I/O address */ ! 68: #define HP100_REG_IRQ_CHANNEL 0x0d /* RW: (8) IRQ and edge/level int */ ! 69: #define HP100_REG_SRAM 0x0e /* RW: (8) How much RAM on card */ ! 70: #define HP100_REG_BM 0x0f /* RW: (8) Controls BM functions */ ! 71: ! 72: /* Page 3 - EEPROM/Boot ROM */ ! 73: ! 74: #define HP100_REG_EEPROM_CTRL 0x08 /* RW: (16) Used to load EEPROM */ ! 75: ! 76: /* Page 4 - LAN Configuration */ ! 77: ! 78: #define HP100_REG_LAN_CFG_10 0x08 /* RW: (16) Set 10M XCVR functions */ ! 79: #define HP100_REG_LAN_CFG_VG 0x0a /* RW: (16) Set 100M XCVR functions */ ! 80: #define HP100_REG_MAC_CFG_1 0x0c /* RW: (8) Types of pkts to accept */ ! 81: #define HP100_REG_MAC_CFG_2 0x0d /* RW: (8) Misc MAC functions */ ! 82: /* The follow clear when read: */ ! 83: #define HP100_REG_DROPPED 0x10 /* R: (16),11:0 Pkts cant fit in mem*/ ! 84: #define HP100_REG_CRC 0x12 /* R: (8) Pkts with CRC */ ! 85: #define HP100_REG_ABORT 0x13 /* R: (8) Aborted Tx pkts */ ! 86: ! 87: /* Page 5 - MMU */ ! 88: ! 89: #define HP100_REG_RX_MEM_STOP 0x0c /* RW: (16) End of Rx ring addr */ ! 90: #define HP100_REG_TX_MEM_STOP 0x0e /* RW: (16) End of Tx ring addr */ ! 91: ! 92: /* Page 6 - Card ID/Physical LAN Address */ ! 93: ! 94: #define HP100_REG_BOARD_ID 0x08 /* R: (8) EISA/ISA card ID */ ! 95: #define HP100_REG_BOARD_IO_CHCK 0x0c /* R: (8) Added to ID to get FFh */ ! 96: #define HP100_REG_SOFT_MODEL 0x0d /* R: (8) Config program defined */ ! 97: #define HP100_REG_LAN_ADDR 0x10 /* R: (8) MAC addr of card */ ! 98: #define HP100_REG_LAN_ADDR_CHCK 0x16 /* R: (8) Added to addr to get FFh */ ! 99: ! 100: /* Page 7 - MMU Current Pointers */ ! 101: ! 102: #define HP100_REG_RX_MEM_BR 0x08 /* R: (16) Current begin of Rx ring */ ! 103: #define HP100_REG_RX_MEM_ER 0x0a /* R: (16) Current end of Rx ring */ ! 104: #define HP100_REG_TX_MEM_BR 0x0c /* R: (16) Current begin of Tx ring */ ! 105: #define HP100_REG_TX_MEM_ER 0x0e /* R: (16) Current end of Rx ring */ ! 106: #define HP100_REG_MEM_DEBUG 0x1a /* RW: (16) Used for memory tests */ ! 107: ! 108: /* ! 109: * HardwareIDReg bits/masks ! 110: */ ! 111: ! 112: #define HP100_HW_ID_0 0x50 /* Hardware ID bytes. */ ! 113: #define HP100_HW_ID_1 0x48 ! 114: #define HP100_HW_ID_2_REVA 0x50 /* Rev. A ID. NOTE: lower nibble not used */ ! 115: #define HP100_HW_ID_3 0x53 ! 116: ! 117: /* ! 118: * OptionLSWReg bits/masks ! 119: */ ! 120: ! 121: #define HP100_DEBUG_EN 0x8000 /* 0:Disable, 1:Enable Debug Dump Pointer */ ! 122: #define HP100_RX_HDR 0x4000 /* 0:Disable, 1:Enable putting pkt into */ ! 123: /* system memory before Rx interrupt */ ! 124: #define HP100_MMAP_DIS 0x2000 /* 0:Enable, 1:Disable memory mapping. */ ! 125: /* MMAP_DIS must be 0 and MEM_EN must */ ! 126: /* be 1 for memory-mapped mode to be */ ! 127: /* enabled */ ! 128: #define HP100_EE_EN 0x1000 /* 0:Disable,1:Enable EEPROM writing */ ! 129: #define HP100_BM_WRITE 0x0800 /* 0:Slave, 1:Bus Master for Tx data */ ! 130: #define HP100_BM_READ 0x0400 /* 0:Slave, 1:Bus Master for Rx data */ ! 131: #define HP100_TRI_INT 0x0200 /* 0:Dont, 1:Do tri-state the int */ ! 132: #define HP100_MEM_EN 0x0040 /* Config program set this to */ ! 133: /* 0:Disable, 1:Enable mem map. */ ! 134: /* See MMAP_DIS. */ ! 135: #define HP100_IO_EN 0x0020 /* 0:Disable, 1:Enable I/O transfers */ ! 136: #define HP100_BOOT_EN 0x0010 /* 0:Disable, 1:Enable boot ROM access */ ! 137: #define HP100_FAKE_INT 0x0008 /* 0:No int, 1:int */ ! 138: #define HP100_INT_EN 0x0004 /* 0:Disable, 1:Enable ints from card */ ! 139: #define HP100_HW_RST 0x0002 /* 0:Reset, 1:Out of reset */ ! 140: ! 141: /* ! 142: * OptionMSWReg bits/masks ! 143: */ ! 144: #define HP100_PRIORITY_TX 0x0080 /* 0:Don't, 1:Do all Tx pkts as priority */ ! 145: #define HP100_EE_LOAD 0x0040 /* 1:EEPROM loading, 0 when done */ ! 146: #define HP100_ADV_NXT_PKT 0x0004 /* 1:Advance to next pkt in Rx queue, */ ! 147: /* h/w will set to 0 when done */ ! 148: #define HP100_TX_CMD 0x0002 /* 1:Tell h/w download done, h/w will set */ ! 149: /* to 0 when done */ ! 150: ! 151: /* ! 152: * InterruptStatusReg/InterruptMaskReg bits/masks. These bits will 0 when a 1 ! 153: * is written to them. ! 154: */ ! 155: #define HP100_RX_PACKET 0x0400 /* 0:No, 1:Yes pkt has been Rx */ ! 156: #define HP100_RX_ERROR 0x0200 /* 0:No, 1:Yes Rx pkt had error */ ! 157: #define HP100_TX_SPACE_AVAIL 0x0010 /* 0:<8192, 1:>=8192 Tx free bytes */ ! 158: #define HP100_TX_COMPLETE 0x0008 /* 0:No, 1:Yes a Tx has completed */ ! 159: #define HP100_TX_ERROR 0x0002 /* 0:No, 1:Yes Tx pkt had error */ ! 160: ! 161: /* ! 162: * TxMemoryFreeCountReg bits/masks. ! 163: */ ! 164: #define HP100_AUTO_COMPARE 0x8000 /* Says at least 8k is available for Tx. */ ! 165: /* NOTE: This mask is for the upper */ ! 166: /* word of the register. */ ! 167: ! 168: /* ! 169: * IRQChannelReg bits/masks. ! 170: */ ! 171: #define HP100_ZERO_WAIT_EN 0x80 /* 0:No, 1:Yes assers NOWS signal */ ! 172: #define HP100_LEVEL_IRQ 0x10 /* 0:Edge, 1:Level type interrupts. */ ! 173: /* Only valid on EISA cards. */ ! 174: #define HP100_IRQ_MASK 0x0F /* Isolate the IRQ bits */ ! 175: ! 176: /* ! 177: * SRAMReg bits/masks. ! 178: */ ! 179: #define HP100_RAM_SIZE_MASK 0xe0 /* AND to get SRAM size index */ ! 180: #define HP100_RAM_SIZE_SHIFT 0x05 /* Shift count to put index in lower bits */ ! 181: ! 182: /* ! 183: * BMReg bits/masks. ! 184: */ ! 185: #define HP100_BM_SLAVE 0x04 /* 0:Slave, 1:BM mode */ ! 186: ! 187: /* ! 188: * EEPROMControlReg bits/masks. ! 189: */ ! 190: #define HP100_EEPROM_LOAD 0x0001 /* 0->1 loads the EEPROM into registers. */ ! 191: /* When it goes back to 0, load is */ ! 192: /* complete. This should take ~600us. */ ! 193: ! 194: /* ! 195: * LANCntrCfg10Reg bits/masks. ! 196: */ ! 197: #define HP100_SQU_ST 0x0100 /* 0:No, 1:Yes collision signal sent */ ! 198: /* after Tx. Only used for AUI. */ ! 199: #define HP100_MAC10_SEL 0x00c0 /* Get bits to indicate MAC */ ! 200: #define HP100_AUI_SEL 0x0020 /* Status of AUI selection */ ! 201: #define HP100_LOW_TH 0x0010 /* 0:No, 1:Yes allow better cabling */ ! 202: #define HP100_LINK_BEAT_DIS 0x0008 /* 0:Enable, 1:Disable link beat */ ! 203: #define HP100_LINK_BEAT_ST 0x0004 /* 0:No, 1:Yes link beat being Rx */ ! 204: #define HP100_R_ROL_ST 0x0002 /* 0:No, 1:Yes Rx twisted pair has been */ ! 205: /* reversed */ ! 206: #define HP100_AUI_ST 0x0001 /* 0:No, 1:Yes use AUI on TP card */ ! 207: ! 208: /* MAC Selection, use with MAC10_SEL bits */ ! 209: #define HP100_AUTO_SEL_10 0x0 /* Auto select */ ! 210: #define HP100_XCVR_LXT901_10 0x1 /* LXT901 10BaseT transceiver */ ! 211: #define HP100_XCVR_7213 0x2 /* 7213 transceiver */ ! 212: #define HP100_XCVR_82503 0x3 /* 82503 transceiver */ ! 213: ! 214: ! 215: /* ! 216: * LANCntrCfgVGReg bits/masks. ! 217: */ ! 218: #define HP100_FRAME_FORMAT 0x0800 /* 0:802.3, 1:802.5 frames */ ! 219: #define HP100_BRIDGE 0x0400 /* 0:No, 1:Yes tell hub it's a bridge */ ! 220: #define HP100_PROM_MODE 0x0200 /* 0:No, 1:Yes tell hub card is */ ! 221: /* promiscuous */ ! 222: #define HP100_REPEATER 0x0100 /* 0:No, 1:Yes tell hub MAC wants to be */ ! 223: /* a cascaded repeater */ ! 224: #define HP100_MAC100_SEL 0x0080 /* 0:No, 1:Yes use 100 Mbit MAC */ ! 225: #define HP100_LINK_UP_ST 0x0040 /* 0:No, 1:Yes endnode logged in */ ! 226: #define HP100_LINK_CABLE_ST 0x0020 /* 0:No, 1:Yes cable can hear tones from */ ! 227: /* hub */ ! 228: #define HP100_LOAD_ADDR 0x0010 /* 0->1 card addr will be sent to hub. */ ! 229: /* 100ms later the link status bits are */ ! 230: /* valid */ ! 231: #define HP100_LINK_CMD 0x0008 /* 0->1 link will attempt to log in. */ ! 232: /* 100ms later the link status bits are */ ! 233: /* valid */ ! 234: #define HP100_LINK_GOOD_ST 0x0002 /* 0:No, 1:Yes cable passed training */ ! 235: #define HP100_VG_RESET 0x0001 /* 0:Yes, 1:No reset the 100VG MAC */ ! 236: ! 237: ! 238: /* ! 239: * MACConfiguration1Reg bits/masks. ! 240: */ ! 241: #define HP100_RX_IDLE 0x80 /* 0:Yes, 1:No currently receiving pkts */ ! 242: #define HP100_TX_IDLE 0x40 /* 0:Yes, 1:No currently Txing pkts */ ! 243: #define HP100_RX_EN 0x20 /* 0:No, 1:Yes allow receiving of pkts */ ! 244: #define HP100_TX_EN 0x10 /* 0:No, 1:Yes allow transmiting of pkts */ ! 245: #define HP100_ACC_ERRORED 0x08 /* 0:No, 1:Yes allow Rx of errored pkts */ ! 246: #define HP100_ACC_MC 0x04 /* 0:No, 1:Yes allow Rx of multicast pkts */ ! 247: #define HP100_ACC_BC 0x02 /* 0:No, 1:Yes allow Rx of broadcast pkts */ ! 248: #define HP100_ACC_PHY 0x01 /* 0:No, 1:Yes allow Rx of ALL physical pkts */ ! 249: ! 250: #define HP100_MAC1MODEMASK 0xf0 /* Hide ACC bits */ ! 251: #define HP100_MAC1MODE1 0x00 /* Receive nothing, must also disable RX */ ! 252: #define HP100_MAC1MODE2 0x00 ! 253: #define HP100_MAC1MODE3 HP100_MAC1MODE2 | HP100_ACC_BC ! 254: #define HP100_MAC1MODE4 HP100_MAC1MODE3 | HP100_ACC_MC ! 255: #define HP100_MAC1MODE5 HP100_MAC1MODE4 /* set mc hash to all ones also */ ! 256: #define HP100_MAC1MODE6 HP100_MAC1MODE5 | HP100_ACC_PHY /* Promiscuous */ ! 257: ! 258: /* Note MODE6 will receive all GOOD packets on the LAN. This really needs ! 259: a mode 7 defined to be LAN Analyzer mode, which will receive errored and ! 260: runt packets, and keep the CRC bytes. */ ! 261: ! 262: #define HP100_MAC1MODE7 MAC1MODE6 OR ACC_ERRORED ! 263: ! 264: /* ! 265: * MACConfiguration2Reg bits/masks. ! 266: */ ! 267: #define HP100_TR_MODE 0x80 /* 0:No, 1:Yes support Token Ring formats */ ! 268: #define HP100_TX_SAME 0x40 /* 0:No, 1:Yes Tx same packet continuous */ ! 269: #define HP100_LBK_XCVR 0x20 /* 0:No, 1:Yes loopback through MAC & */ ! 270: /* transceiver */ ! 271: #define HP100_LBK_MAC 0x10 /* 0:No, 1:Yes loopback through MAC */ ! 272: #define HP100_CRC_I 0x08 /* 0:No, 1:Yes inhibit CRC on Tx packets */ ! 273: #define HP100_KEEP_CRC 0x02 /* 0:No, 1:Yes keep CRC on Rx packets. */ ! 274: /* The length will reflect this. */ ! 275: ! 276: #define HP100_MAC2MODEMASK 0x02 ! 277: #define HP100_MAC2MODE1 0x00 ! 278: #define HP100_MAC2MODE2 0x00 ! 279: #define HP100_MAC2MODE3 0x00 ! 280: #define HP100_MAC2MODE4 0x00 ! 281: #define HP100_MAC2MODE5 0x00 ! 282: #define HP100_MAC2MODE6 0x00 ! 283: #define HP100_MAC2MODE7 KEEP_CRC ! 284: ! 285: /* ! 286: * Set/Reset bits ! 287: */ ! 288: #define HP100_SET_HB 0x0100 /* 0:Set fields to 0 whose mask is 1 */ ! 289: #define HP100_SET_LB 0x0001 /* HB sets upper byte, LB sets lower byte */ ! 290: #define HP100_RESET_HB 0x0000 /* For readability when resetting bits */ ! 291: #define HP100_RESET_LB 0x0000 /* For readability when resetting bits */ ! 292: ! 293: /* ! 294: * Misc. Constants ! 295: */ ! 296: #define HP100_LAN_100 100 /* lan_type value for VG */ ! 297: #define HP100_LAN_10 10 /* lan_type value for 10BaseT */ ! 298: #define HP100_LAN_ERR (-1) /* lan_type value for link down */ ! 299: ! 300: /* ! 301: * Receive Header Definition. ! 302: */ ! 303: ! 304: struct hp100_rx_header { ! 305: u_short rx_length; /* Pkt length is bits 12:0 */ ! 306: u_short rx_status; /* status of the packet */ ! 307: }; ! 308: ! 309: #define HP100_PKT_LEN_MASK 0x1FFF /* AND with RxLength to get length bits */ ! 310: ! 311: /* Receive Packet Status. Note, the error bits are only valid if ACC_ERRORED ! 312: bit in the MAC Configuration Register 1 is set. */ ! 313: ! 314: #define HP100_RX_PRI 0x8000 /* 0:No, 1:Yes packet is priority */ ! 315: #define HP100_SDF_ERR 0x4000 /* 0:No, 1:Yes start of frame error */ ! 316: #define HP100_SKEW_ERR 0x2000 /* 0:No, 1:Yes skew out of range */ ! 317: #define HP100_BAD_SYMBOL_ERR 0x1000 /* 0:No, 1:Yes invalid symbol received */ ! 318: #define HP100_RCV_IPM_ERR 0x0800 /* 0:No, 1:Yes pkt had an invalid packet */ ! 319: /* marker */ ! 320: #define HP100_SYMBOL_BAL_ERR 0x0400 /* 0:No, 1:Yes symbol balance error */ ! 321: #define HP100_VG_ALN_ERR 0x0200 /* 0:No, 1:Yes non-octet received */ ! 322: #define HP100_TRUNC_ERR 0x0100 /* 0:No, 1:Yes the packet was truncated */ ! 323: #define HP100_RUNT_ERR 0x0040 /* 0:No, 1:Yes pkt length < Min Pkt */ ! 324: /* Length Reg. */ ! 325: #define HP100_ALN_ERR 0x0010 /* 0:No, 1:Yes align error. */ ! 326: #define HP100_CRC_ERR 0x0008 /* 0:No, 1:Yes CRC occurred. */ ! 327: ! 328: /* The last three bits indicate the type of destination address */ ! 329: ! 330: #define HP100_MULTI_ADDR_HASH 0x0006 /* 110: Addr multicast, matched hash */ ! 331: #define HP100_BROADCAST_ADDR 0x0003 /* x11: Addr broadcast */ ! 332: #define HP100_MULTI_ADDR_NO_HASH 0x0002 /* 010: Addr multicast, didn't match hash */ ! 333: #define HP100_PHYS_ADDR_MATCH 0x0001 /* x01: Addr was physical and mine */ ! 334: #define HP100_PHYS_ADDR_NO_MATCH 0x0000 /* x00: Addr was physical but not mine */ ! 335: ! 336: /* ! 337: * macros ! 338: */ ! 339: ! 340: #define hp100_inb( reg ) \ ! 341: inb( ioaddr + HP100_REG_##reg ) ! 342: #define hp100_inw( reg ) \ ! 343: inw( ioaddr + HP100_REG_##reg ) ! 344: #define hp100_inl( reg ) \ ! 345: inl( ioaddr + HP100_REG_##reg ) ! 346: #define hp100_outb( data, reg ) \ ! 347: outb( data, ioaddr + HP100_REG_##reg ) ! 348: #define hp100_outw( data, reg ) \ ! 349: outw( data, ioaddr + HP100_REG_##reg ) ! 350: #define hp100_outl( data, reg ) \ ! 351: outl( data, ioaddr + HP100_REG_##reg ) ! 352: #define hp100_orb( data, reg ) \ ! 353: outb( inb( ioaddr + HP100_REG_##reg ) | (data), ioaddr + HP100_REG_##reg ) ! 354: #define hp100_orw( data, reg ) \ ! 355: outw( inw( ioaddr + HP100_REG_##reg ) | (data), ioaddr + HP100_REG_##reg ) ! 356: #define hp100_andb( data, reg ) \ ! 357: outb( inb( ioaddr + HP100_REG_##reg ) & (data), ioaddr + HP100_REG_##reg ) ! 358: #define hp100_andw( data, reg ) \ ! 359: outw( inw( ioaddr + HP100_REG_##reg ) & (data), ioaddr + HP100_REG_##reg ) ! 360: ! 361: #define hp100_page( page ) \ ! 362: outw( HP100_PAGE_##page, ioaddr + HP100_REG_PAGING ) ! 363: #define hp100_ints_off() \ ! 364: outw( HP100_INT_EN | HP100_RESET_LB, ioaddr + HP100_REG_OPTION_LSW ) ! 365: #define hp100_ints_on() \ ! 366: outw( HP100_INT_EN | HP100_SET_LB, ioaddr + HP100_REG_OPTION_LSW ) ! 367: #define hp100_mem_map_enable() \ ! 368: outw( HP100_MMAP_DIS | HP100_RESET_HB, ioaddr + HP100_REG_OPTION_LSW ) ! 369: #define hp100_mem_map_disable() \ ! 370: outw( HP100_MMAP_DIS | HP100_SET_HB, ioaddr + HP100_REG_OPTION_LSW ) ! 371: #define hp100_reset_card() \ ! 372: outw( HP100_HW_RST | HP100_RESET_LB, ioaddr + HP100_REG_OPTION_LSW ) ! 373: #define hp100_unreset_card() \ ! 374: outw( HP100_HW_RST | HP100_SET_LB, ioaddr + HP100_REG_OPTION_LSW )
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