To (partially) answer my own question, there is some info in the NETBSD rd driver. (rd.h and rd.c) I guess no one has tried coding up a SS-80 or CS-80 drive simulator yet.. rd.c /* * Misc. HW description, indexed by sc_type. * Used for mapping 256-byte sectors for 512-byte sectors */ const struct rdidentinfo { u_int16_t ri_hwid; /* 2 byte HW id */ u_int16_t ri_maxunum; /* maximum allowed unit number */ char *ri_desc; /* drive type description */ int ri_nbpt; /* DEV_BSIZE blocks per track */ int ri_ntpc; /* tracks per cylinder */ int ri_ncyl; /* cylinders per unit */ int ri_nblocks; /* DEV_BSIZE blocks on disk */ } rdidentinfo[] = { { RD7946AID, 0, "7945A", NRD7945ABPT, NRD7945ATRK, 968, 108416 }, { RD9134DID, 1, "9134D", NRD9134DBPT, NRD9134DTRK, 303, 29088 }, { RD9134LID, 1, "9122S", NRD9122SBPT, NRD9122STRK, 77, 1232 }, { RD7912PID, 0, "7912P", NRD7912PBPT, NRD7912PTRK, 572, 128128 }, { RD7914PID, 0, "7914P", NRD7914PBPT, NRD7914PTRK, 1152, 258048 }, { RD7958AID, 0, "7958A", NRD7958ABPT, NRD7958ATRK, 1013, 255276 }, { RD7957AID, 0, "7957A", NRD7957ABPT, NRD7957ATRK, 1036, 159544 }, { RD7933HID, 0, "7933H", NRD7933HBPT, NRD7933HTRK, 1321, 789958 }, { RD9134LID, 1, "9134L", NRD9134LBPT, NRD9134LTRK, 973, 77840 }, { RD7936HID, 0, "7936H", NRD7936HBPT, NRD7936HTRK, 698, 600978 }, { RD7937HID, 0, "7937H", NRD7937HBPT, NRD7937HTRK, 698, 1116102 }, { RD7914CTID, 0, "7914CT", NRD7914PBPT, NRD7914PTRK, 1152, 258048 }, { RD7946AID, 0, "7946A", NRD7945ABPT, NRD7945ATRK, 968, 108416 }, { RD9134LID, 1, "9122D", NRD9122SBPT, NRD9122STRK, 77, 1232 }, { RD7957BID, 0, "7957B", NRD7957BBPT, NRD7957BTRK, 1269, 159894 }, { RD7958BID, 0, "7958B", NRD7958BBPT, NRD7958BTRK, 786, 297108 }, { RD7959BID, 0, "7959B", NRD7959BBPT, NRD7959BTRK, 1572, 594216 }, { RD2200AID, 0, "2200A", NRD2200ABPT, NRD2200ATRK, 1449, 654948 }, { RD2203AID, 0, "2203A", NRD2203ABPT, NRD2203ATRK, 1449, 1309896 } }; rd.h/* HW ids */ #define RD7946AID 0x220 /* also 7945A */ #define RD9134DID 0x221 /* also 9122S */ #define RD9134LID 0x222 /* also 9122D */ #define RD7912PID 0x209 #define RD7914CTID 0x20A #define RD7914PID 0x20B #define RD7958AID 0x22B #define RD7957AID 0x22A #define RD7933HID 0x212 #define RD7936HID 0x213 /* just guessing -- as of yet unknown */ #define RD7937HID 0x214 #define RD7957BID 0x22C /* another guess based on 7958B */ #define RD7958BID 0x22D #define RD7959BID 0x22E /* another guess based on 7958B */ #define RD2200AID 0x22F #define RD2203AID 0x230 /* yet another guess */ /* SW ids -- indicies into rdidentinfo, order is arbitrary */ #define RD7945A 0 #define RD9134D 1 #define RD9122S 2 #define RD7912P 3 #define RD7914P 4 #define RD7958A 5 #define RD7957A 6 #define RD7933H 7 #define RD9134L 8 #define RD7936H 9 #define RD7937H 10 #define RD7914CT 11 #define RD7946A 12 #define RD9122D 13 #define RD7957B 14 #define RD7958B 15 #define RD7959B 16 #define NRD7945ABPT 16 #define NRD7945ATRK 7 #define NRD9134DBPT 16 #define NRD9134DTRK 6 #define NRD9122SBPT 8 #define NRD9122STRK 2 #define NRD7912PBPT 32 #define NRD7912PTRK 7 #define NRD7914PBPT 32 #define NRD7914PTRK 7 #define NRD7933HBPT 46 #define NRD7933HTRK 13 #define NRD9134LBPT 16 #define NRD9134LTRK 5 /* * Several HP drives have an odd number of 256 byte sectors per track. * This makes it rather difficult to break them into 512 and 1024 byte blocks. * So...we just do like HPUX and don't bother to respect hardware track/head * boundries -- we just mold the disk so that we use the entire capacity. * HPUX also sometimes doesn't abide by cylinder boundries, we attempt to * whenever possible. * * DISK REAL (256 BPS) HPUX (1024 BPS) BSD (512 BPS) * SPT x HD x CYL SPT x HD x CYL SPT x HD x CYL * ----- --------------- --------------- -------------- * 7936: 123 x 7 x 1396 25 x 7 x 1716 123 x 7 x 698 * 7937: 123 x 13 x 1396 25 x 16 x 1395 123 x 13 x 698 * * 7957A: 63 x 5 x 1013 11 x 7 x 1036 22 x 7 x 1036 * 7958A: 63 x 8 x 1013 21 x 6 x 1013 36 x 7 x 1013 * * 7957B: 63 x 4 x 1269 9 x 7 x 1269 18 x 7 x 1269 * 7958B: 63 x 6 x 1572 21 x 9 x 786 42 x 9 x 786 * 7959B: 63 x 12 x 1572 21 x 9 x 1572 42 x 9 x 1572 * * 2200A: 113 x 8 x 1449 113 x 2 x 1449 113 x 4 x 1449 * 2203A: 113 x 16 x 1449 113 x 4 x 1449 113 x 8 x 1449 */ #define NRD7936HBPT 123 #define NRD7936HTRK 7 #define NRD7937HBPT 123 #define NRD7937HTRK 13 #define NRD7957ABPT 22 #define NRD7957ATRK 7 #define NRD7958ABPT 36 #define NRD7958ATRK 7 #define NRD7957BBPT 18 #define NRD7957BTRK 7 #define NRD7958BBPT 42 #define NRD7958BTRK 9 #define NRD7959BBPT 42 #define NRD7959BTRK 9 #define NRD2200ABPT 113 #define NRD2200ATRK 4 #define NRD2203ABPT 113 #define NRD2203ATRK 8