Adding qemu as a submodule of KVMFORNFV

This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>

1 files changed, 0 insertions, 751 deletions

diff --git a/qemu/roms/seabios/src/disk.c b/qemu/roms/seabios/src/disk.c
deleted file mode 100644
index 3854d0024..000000000
--- a/qemu/roms/seabios/src/disk.c
+++ /dev/null
@@ -1,751 +0,0 @@
-// 16bit code to access hard drives.
-//
-// Copyright (C) 2008  Kevin O'Connor <kevin@koconnor.net>
-// Copyright (C) 2002  MandrakeSoft S.A.
-//
-// This file may be distributed under the terms of the GNU LGPLv3 license.
-
-#include "biosvar.h" // SET_BDA
-#include "bregs.h" // struct bregs
-#include "config.h" // CONFIG_*
-#include "hw/ata.h" // ATA_CB_DC
-#include "hw/pic.h" // pic_eoi2
-#include "output.h" // debug_enter
-#include "stacks.h" // call16_int
-#include "std/disk.h" // DISK_RET_SUCCESS
-#include "string.h" // memset
-#include "util.h" // CDRom_locks
-
-
-/****************************************************************
- * Return status functions
- ****************************************************************/
-
-static void
-__disk_ret(struct bregs *regs, u32 linecode, const char *fname)
-{
-    u8 code = linecode;
-    if (regs->dl < EXTSTART_HD)
-        SET_BDA(floppy_last_status, code);
-    else
-        SET_BDA(disk_last_status, code);
-    if (code)
-        __set_code_invalid(regs, linecode, fname);
-    else
-        set_code_success(regs);
-}
-
-static void
-__disk_ret_unimplemented(struct bregs *regs, u32 linecode, const char *fname)
-{
-    u8 code = linecode;
-    if (regs->dl < EXTSTART_HD)
-        SET_BDA(floppy_last_status, code);
-    else
-        SET_BDA(disk_last_status, code);
-    __set_code_unimplemented(regs, linecode, fname);
-}
-
-static void
-__disk_stub(struct bregs *regs, int lineno, const char *fname)
-{
-    __warn_unimplemented(regs, lineno, fname);
-    __disk_ret(regs, DISK_RET_SUCCESS | (lineno << 8), fname);
-}
-
-#define disk_ret(regs, code) \
-    __disk_ret((regs), (code) | (__LINE__ << 8), __func__)
-#define disk_ret_unimplemented(regs, code) \
-    __disk_ret_unimplemented((regs), (code) | (__LINE__ << 8), __func__)
-#define DISK_STUB(regs)                         \
-    __disk_stub((regs), __LINE__, __func__)
-
-
-/****************************************************************
- * Helper functions
- ****************************************************************/
-
-// Get the cylinders/heads/sectors for the given drive.
-static struct chs_s
-getLCHS(struct drive_s *drive_gf)
-{
-    struct chs_s res = { };
-    if (CONFIG_CDROM_EMU && drive_gf == GET_GLOBAL(cdemu_drive_gf)) {
-        // Emulated drive - get info from CDEmu.  (It's not possible to
-        // populate the geometry directly in the driveid because the
-        // geometry is only known after the bios segment is made
-        // read-only).
-        u8 sptcyl = GET_LOW(CDEmu.chs.sptcyl);
-        res.cylinder = GET_LOW(CDEmu.chs.cyllow) + ((sptcyl << 2) & 0x300) + 1;
-        res.head = GET_LOW(CDEmu.chs.heads) + 1;
-        res.sector = sptcyl & 0x3f;
-        return res;
-    }
-    res.cylinder = GET_GLOBALFLAT(drive_gf->lchs.cylinder);
-    res.head = GET_GLOBALFLAT(drive_gf->lchs.head);
-    res.sector = GET_GLOBALFLAT(drive_gf->lchs.sector);
-    return res;
-}
-
-// Perform read/write/verify using old-style chs accesses
-static void noinline
-basic_access(struct bregs *regs, struct drive_s *drive_gf, u16 command)
-{
-    struct disk_op_s dop;
-    dop.drive_gf = drive_gf;
-    dop.command = command;
-
-    u8 count = regs->al;
-    u16 cylinder = regs->ch | ((((u16)regs->cl) << 2) & 0x300);
-    u16 sector = regs->cl & 0x3f;
-    u16 head = regs->dh;
-
-    if (count > 128 || count == 0 || sector == 0) {
-        warn_invalid(regs);
-        disk_ret(regs, DISK_RET_EPARAM);
-        return;
-    }
-    dop.count = count;
-
-    struct chs_s chs = getLCHS(drive_gf);
-    u16 nlc=chs.cylinder, nlh=chs.head, nls=chs.sector;
-
-    // sanity check on cyl heads, sec
-    if (cylinder >= nlc || head >= nlh || sector > nls) {
-        warn_invalid(regs);
-        disk_ret(regs, DISK_RET_EPARAM);
-        return;
-    }
-
-    // translate lchs to lba
-    dop.lba = (((((u32)cylinder * (u32)nlh) + (u32)head) * (u32)nls)
-               + (u32)sector - 1);
-
-    dop.buf_fl = MAKE_FLATPTR(regs->es, regs->bx);
-
-    int status = send_disk_op(&dop);
-
-    regs->al = dop.count;
-
-    disk_ret(regs, status);
-}
-
-// Perform read/write/verify using new-style "int13ext" accesses.
-static void noinline
-extended_access(struct bregs *regs, struct drive_s *drive_gf, u16 command)
-{
-    struct disk_op_s dop;
-    struct int13ext_s *param_far = (struct int13ext_s*)(regs->si+0);
-    // Get lba and check.
-    dop.lba = GET_FARVAR(regs->ds, param_far->lba);
-    dop.command = command;
-    dop.drive_gf = drive_gf;
-    if (dop.lba >= GET_GLOBALFLAT(drive_gf->sectors)) {
-        warn_invalid(regs);
-        disk_ret(regs, DISK_RET_EPARAM);
-        return;
-    }
-
-    dop.buf_fl = SEGOFF_TO_FLATPTR(GET_FARVAR(regs->ds, param_far->data));
-    dop.count = GET_FARVAR(regs->ds, param_far->count);
-    if (! dop.count) {
-        // Nothing to do.
-        disk_ret(regs, DISK_RET_SUCCESS);
-        return;
-    }
-
-    int status = send_disk_op(&dop);
-
-    SET_FARVAR(regs->ds, param_far->count, dop.count);
-
-    disk_ret(regs, status);
-}
-
-
-/****************************************************************
- * Hard Drive functions
- ****************************************************************/
-
-// disk controller reset
-static void
-disk_1300(struct bregs *regs, struct drive_s *drive_gf)
-{
-    struct disk_op_s dop;
-    dop.drive_gf = drive_gf;
-    dop.command = CMD_RESET;
-    dop.count = 0;
-    int status = send_disk_op(&dop);
-    disk_ret(regs, status);
-}
-
-// read disk status
-static void
-disk_1301(struct bregs *regs, struct drive_s *drive_gf)
-{
-    u8 v;
-    if (regs->dl < EXTSTART_HD)
-        // Floppy
-        v = GET_BDA(floppy_last_status);
-    else
-        v = GET_BDA(disk_last_status);
-    regs->ah = v;
-    set_cf(regs, v);
-    // XXX - clear disk_last_status?
-}
-
-// read disk sectors
-static void
-disk_1302(struct bregs *regs, struct drive_s *drive_gf)
-{
-    basic_access(regs, drive_gf, CMD_READ);
-}
-
-// write disk sectors
-static void
-disk_1303(struct bregs *regs, struct drive_s *drive_gf)
-{
-    basic_access(regs, drive_gf, CMD_WRITE);
-}
-
-// verify disk sectors
-static void
-disk_1304(struct bregs *regs, struct drive_s *drive_gf)
-{
-    basic_access(regs, drive_gf, CMD_VERIFY);
-}
-
-// format disk track
-static void noinline
-disk_1305(struct bregs *regs, struct drive_s *drive_gf)
-{
-    debug_stub(regs);
-
-    struct chs_s chs = getLCHS(drive_gf);
-    u16 nlc=chs.cylinder, nlh=chs.head, nls=chs.sector;
-
-    u8 count = regs->al;
-    u8 cylinder = regs->ch;
-    u8 head = regs->dh;
-
-    if (cylinder >= nlc || head >= nlh || count == 0 || count > nls) {
-        disk_ret(regs, DISK_RET_EPARAM);
-        return;
-    }
-
-    struct disk_op_s dop;
-    dop.drive_gf = drive_gf;
-    dop.command = CMD_FORMAT;
-    dop.lba = (((u32)cylinder * (u32)nlh) + (u32)head) * (u32)nls;
-    dop.count = count;
-    dop.buf_fl = MAKE_FLATPTR(regs->es, regs->bx);
-    int status = send_disk_op(&dop);
-    disk_ret(regs, status);
-}
-
-// read disk drive parameters
-static void noinline
-disk_1308(struct bregs *regs, struct drive_s *drive_gf)
-{
-    // Get logical geometry from table
-    struct chs_s chs = getLCHS(drive_gf);
-    u16 nlc=chs.cylinder, nlh=chs.head, nls=chs.sector;
-    nlc--;
-    nlh--;
-    u8 count;
-    if (regs->dl < EXTSTART_HD) {
-        // Floppy
-        count = GET_GLOBAL(FloppyCount);
-
-        if (CONFIG_CDROM_EMU && drive_gf == GET_GLOBAL(cdemu_drive_gf))
-            regs->bx = GET_LOW(CDEmu.media) * 2;
-        else
-            regs->bx = GET_GLOBALFLAT(drive_gf->floppy_type);
-
-        // set es & di to point to 11 byte diskette param table in ROM
-        regs->es = SEG_BIOS;
-        regs->di = (u32)&diskette_param_table2;
-    } else if (regs->dl < EXTSTART_CD) {
-        // Hard drive
-        count = GET_BDA(hdcount);
-        nlc--;  // last sector reserved
-    } else {
-        // Not supported on CDROM
-        disk_ret(regs, DISK_RET_EPARAM);
-        return;
-    }
-
-    if (CONFIG_CDROM_EMU && GET_LOW(CDEmu.media)) {
-        u8 emudrive = GET_LOW(CDEmu.emulated_drive);
-        if (((emudrive ^ regs->dl) & 0x80) == 0)
-            // Note extra drive due to emulation.
-            count++;
-        if (regs->dl < EXTSTART_HD && count > 2)
-            // Max of two floppy drives.
-            count = 2;
-    }
-
-    regs->al = 0;
-    regs->ch = nlc & 0xff;
-    regs->cl = ((nlc >> 2) & 0xc0) | (nls & 0x3f);
-    regs->dh = nlh;
-
-    disk_ret(regs, DISK_RET_SUCCESS);
-    regs->dl = count;
-}
-
-// initialize drive parameters
-static void
-disk_1309(struct bregs *regs, struct drive_s *drive_gf)
-{
-    DISK_STUB(regs);
-}
-
-// seek to specified cylinder
-static void
-disk_130c(struct bregs *regs, struct drive_s *drive_gf)
-{
-    DISK_STUB(regs);
-}
-
-// alternate disk reset
-static void
-disk_130d(struct bregs *regs, struct drive_s *drive_gf)
-{
-    DISK_STUB(regs);
-}
-
-// check drive ready
-static void
-disk_1310(struct bregs *regs, struct drive_s *drive_gf)
-{
-    // should look at 40:8E also???
-
-    struct disk_op_s dop;
-    dop.drive_gf = drive_gf;
-    dop.command = CMD_ISREADY;
-    dop.count = 0;
-    int status = send_disk_op(&dop);
-    disk_ret(regs, status);
-}
-
-// recalibrate
-static void
-disk_1311(struct bregs *regs, struct drive_s *drive_gf)
-{
-    DISK_STUB(regs);
-}
-
-// controller internal diagnostic
-static void
-disk_1314(struct bregs *regs, struct drive_s *drive_gf)
-{
-    DISK_STUB(regs);
-}
-
-// read disk drive size
-static void noinline
-disk_1315(struct bregs *regs, struct drive_s *drive_gf)
-{
-    disk_ret(regs, DISK_RET_SUCCESS);
-    if (regs->dl < EXTSTART_HD || regs->dl >= EXTSTART_CD) {
-        // Floppy or cdrom
-        regs->ah = 1;
-        return;
-    }
-    // Hard drive
-
-    // Get logical geometry from table
-    struct chs_s chs = getLCHS(drive_gf);
-    u16 nlc=chs.cylinder, nlh=chs.head, nls=chs.sector;
-
-    // Compute sector count seen by int13
-    u32 lba = (u32)(nlc - 1) * (u32)nlh * (u32)nls;
-    regs->cx = lba >> 16;
-    regs->dx = lba & 0xffff;
-    regs->ah = 3; // hard disk accessible
-}
-
-static void
-disk_1316(struct bregs *regs, struct drive_s *drive_gf)
-{
-    if (regs->dl >= EXTSTART_HD) {
-        // Hard drive
-        disk_ret(regs, DISK_RET_EPARAM);
-        return;
-    }
-    disk_ret(regs, DISK_RET_ECHANGED);
-}
-
-// IBM/MS installation check
-static void
-disk_1341(struct bregs *regs, struct drive_s *drive_gf)
-{
-    regs->bx = 0xaa55;  // install check
-    regs->cx = 0x0007;  // ext disk access and edd, removable supported
-    disk_ret(regs, DISK_RET_SUCCESS);
-    regs->ah = 0x30;    // EDD 3.0
-}
-
-// IBM/MS extended read
-static void
-disk_1342(struct bregs *regs, struct drive_s *drive_gf)
-{
-    extended_access(regs, drive_gf, CMD_READ);
-}
-
-// IBM/MS extended write
-static void
-disk_1343(struct bregs *regs, struct drive_s *drive_gf)
-{
-    extended_access(regs, drive_gf, CMD_WRITE);
-}
-
-// IBM/MS verify
-static void
-disk_1344(struct bregs *regs, struct drive_s *drive_gf)
-{
-    extended_access(regs, drive_gf, CMD_VERIFY);
-}
-
-// Locks for removable devices
-u8 CDRom_locks[BUILD_MAX_EXTDRIVE] VARLOW;
-
-// lock
-static void
-disk_134500(struct bregs *regs, struct drive_s *drive_gf)
-{
-    int cdid = regs->dl - EXTSTART_CD;
-    u8 locks = GET_LOW(CDRom_locks[cdid]);
-    if (locks == 0xff) {
-        regs->al = 1;
-        disk_ret(regs, DISK_RET_ETOOMANYLOCKS);
-        return;
-    }
-    SET_LOW(CDRom_locks[cdid], locks + 1);
-    regs->al = 1;
-    disk_ret(regs, DISK_RET_SUCCESS);
-}
-
-// unlock
-static void
-disk_134501(struct bregs *regs, struct drive_s *drive_gf)
-{
-    int cdid = regs->dl - EXTSTART_CD;
-    u8 locks = GET_LOW(CDRom_locks[cdid]);
-    if (locks == 0x00) {
-        regs->al = 0;
-        disk_ret(regs, DISK_RET_ENOTLOCKED);
-        return;
-    }
-    locks--;
-    SET_LOW(CDRom_locks[cdid], locks);
-    regs->al = (locks ? 1 : 0);
-    disk_ret(regs, DISK_RET_SUCCESS);
-}
-
-// status
-static void
-disk_134502(struct bregs *regs, struct drive_s *drive_gf)
-{
-    int cdid = regs->dl - EXTSTART_CD;
-    u8 locks = GET_LOW(CDRom_locks[cdid]);
-    regs->al = (locks ? 1 : 0);
-    disk_ret(regs, DISK_RET_SUCCESS);
-}
-
-static void
-disk_1345XX(struct bregs *regs, struct drive_s *drive_gf)
-{
-    disk_ret_unimplemented(regs, DISK_RET_EPARAM);
-}
-
-// IBM/MS lock/unlock drive
-static void
-disk_1345(struct bregs *regs, struct drive_s *drive_gf)
-{
-    if (regs->dl < EXTSTART_CD) {
-        // Always success for HD
-        disk_ret(regs, DISK_RET_SUCCESS);
-        return;
-    }
-
-    switch (regs->al) {
-    case 0x00: disk_134500(regs, drive_gf); break;
-    case 0x01: disk_134501(regs, drive_gf); break;
-    case 0x02: disk_134502(regs, drive_gf); break;
-    default:   disk_1345XX(regs, drive_gf); break;
-    }
-}
-
-// IBM/MS eject media
-static void noinline
-disk_1346(struct bregs *regs, struct drive_s *drive_gf)
-{
-    if (regs->dl < EXTSTART_CD) {
-        // Volume Not Removable
-        disk_ret(regs, DISK_RET_ENOTREMOVABLE);
-        return;
-    }
-
-    int cdid = regs->dl - EXTSTART_CD;
-    u8 locks = GET_LOW(CDRom_locks[cdid]);
-    if (locks != 0) {
-        disk_ret(regs, DISK_RET_ELOCKED);
-        return;
-    }
-
-    // FIXME should handle 0x31 no media in device
-    // FIXME should handle 0xb5 valid request failed
-
-    // Call removable media eject
-    struct bregs br;
-    memset(&br, 0, sizeof(br));
-    br.ah = 0x52;
-    br.dl = regs->dl;
-    call16_int(0x15, &br);
-
-    if (br.ah || br.flags & F_CF) {
-        disk_ret(regs, DISK_RET_ELOCKED);
-        return;
-    }
-    disk_ret(regs, DISK_RET_SUCCESS);
-}
-
-// IBM/MS extended seek
-static void
-disk_1347(struct bregs *regs, struct drive_s *drive_gf)
-{
-    extended_access(regs, drive_gf, CMD_SEEK);
-}
-
-// IBM/MS get drive parameters
-static void
-disk_1348(struct bregs *regs, struct drive_s *drive_gf)
-{
-    int ret = fill_edd(SEGOFF(regs->ds, regs->si), drive_gf);
-    disk_ret(regs, ret);
-}
-
-// IBM/MS extended media change
-static void
-disk_1349(struct bregs *regs, struct drive_s *drive_gf)
-{
-    if (regs->dl < EXTSTART_CD) {
-        // Always success for HD
-        disk_ret(regs, DISK_RET_SUCCESS);
-        return;
-    }
-    set_invalid(regs);
-    // always send changed ??
-    regs->ah = DISK_RET_ECHANGED;
-}
-
-static void
-disk_134e01(struct bregs *regs, struct drive_s *drive_gf)
-{
-    disk_ret(regs, DISK_RET_SUCCESS);
-}
-
-static void
-disk_134e03(struct bregs *regs, struct drive_s *drive_gf)
-{
-    disk_ret(regs, DISK_RET_SUCCESS);
-}
-
-static void
-disk_134e04(struct bregs *regs, struct drive_s *drive_gf)
-{
-    disk_ret(regs, DISK_RET_SUCCESS);
-}
-
-static void
-disk_134e06(struct bregs *regs, struct drive_s *drive_gf)
-{
-    disk_ret(regs, DISK_RET_SUCCESS);
-}
-
-static void
-disk_134eXX(struct bregs *regs, struct drive_s *drive_gf)
-{
-    disk_ret(regs, DISK_RET_EPARAM);
-}
-
-// IBM/MS set hardware configuration
-static void
-disk_134e(struct bregs *regs, struct drive_s *drive_gf)
-{
-    switch (regs->al) {
-    case 0x01: disk_134e01(regs, drive_gf); break;
-    case 0x03: disk_134e03(regs, drive_gf); break;
-    case 0x04: disk_134e04(regs, drive_gf); break;
-    case 0x06: disk_134e06(regs, drive_gf); break;
-    default:   disk_134eXX(regs, drive_gf); break;
-    }
-}
-
-static void
-disk_13XX(struct bregs *regs, struct drive_s *drive_gf)
-{
-    disk_ret_unimplemented(regs, DISK_RET_EPARAM);
-}
-
-static void
-disk_13(struct bregs *regs, struct drive_s *drive_gf)
-{
-    //debug_stub(regs);
-
-    // clear completion flag
-    SET_BDA(disk_interrupt_flag, 0);
-
-    switch (regs->ah) {
-    case 0x00: disk_1300(regs, drive_gf); break;
-    case 0x01: disk_1301(regs, drive_gf); break;
-    case 0x02: disk_1302(regs, drive_gf); break;
-    case 0x03: disk_1303(regs, drive_gf); break;
-    case 0x04: disk_1304(regs, drive_gf); break;
-    case 0x05: disk_1305(regs, drive_gf); break;
-    case 0x08: disk_1308(regs, drive_gf); break;
-    case 0x09: disk_1309(regs, drive_gf); break;
-    case 0x0c: disk_130c(regs, drive_gf); break;
-    case 0x0d: disk_130d(regs, drive_gf); break;
-    case 0x10: disk_1310(regs, drive_gf); break;
-    case 0x11: disk_1311(regs, drive_gf); break;
-    case 0x14: disk_1314(regs, drive_gf); break;
-    case 0x15: disk_1315(regs, drive_gf); break;
-    case 0x16: disk_1316(regs, drive_gf); break;
-    case 0x41: disk_1341(regs, drive_gf); break;
-    case 0x42: disk_1342(regs, drive_gf); break;
-    case 0x43: disk_1343(regs, drive_gf); break;
-    case 0x44: disk_1344(regs, drive_gf); break;
-    case 0x45: disk_1345(regs, drive_gf); break;
-    case 0x46: disk_1346(regs, drive_gf); break;
-    case 0x47: disk_1347(regs, drive_gf); break;
-    case 0x48: disk_1348(regs, drive_gf); break;
-    case 0x49: disk_1349(regs, drive_gf); break;
-    case 0x4e: disk_134e(regs, drive_gf); break;
-    default:   disk_13XX(regs, drive_gf); break;
-    }
-}
-
-static void
-floppy_13(struct bregs *regs, struct drive_s *drive_gf)
-{
-    // Only limited commands are supported on floppies.
-    switch (regs->ah) {
-    case 0x00:
-    case 0x01:
-    case 0x02:
-    case 0x03:
-    case 0x04:
-    case 0x05:
-    case 0x08:
-    case 0x15:
-    case 0x16:
-        disk_13(regs, drive_gf);
-        break;
-    default:   disk_13XX(regs, drive_gf); break;
-    }
-}
-
-// ElTorito - Terminate disk emu
-static void
-cdemu_134b(struct bregs *regs)
-{
-    memcpy_far(regs->ds, (void*)(regs->si+0), SEG_LOW, &CDEmu, sizeof(CDEmu));
-
-    // If we have to terminate emulation
-    if (regs->al == 0x00) {
-        // FIXME ElTorito Various. Should be handled accordingly to spec
-        SET_LOW(CDEmu.media, 0x00); // bye bye
-
-        // XXX - update floppy/hd count.
-    }
-
-    disk_ret(regs, DISK_RET_SUCCESS);
-}
-
-
-/****************************************************************
- * Entry points
- ****************************************************************/
-
-static void
-handle_legacy_disk(struct bregs *regs, u8 extdrive)
-{
-    if (! CONFIG_DRIVES) {
-        // XXX - support handle_1301 anyway?
-        disk_ret(regs, DISK_RET_EPARAM);
-        return;
-    }
-
-    if (extdrive < EXTSTART_HD) {
-        struct drive_s *drive_gf = getDrive(EXTTYPE_FLOPPY, extdrive);
-        if (!drive_gf)
-            goto fail;
-        floppy_13(regs, drive_gf);
-        return;
-    }
-
-    struct drive_s *drive_gf;
-    if (extdrive >= EXTSTART_CD)
-        drive_gf = getDrive(EXTTYPE_CD, extdrive - EXTSTART_CD);
-    else
-        drive_gf = getDrive(EXTTYPE_HD, extdrive - EXTSTART_HD);
-    if (!drive_gf)
-        goto fail;
-    disk_13(regs, drive_gf);
-    return;
-
-fail:
-    // XXX - support 1301/1308/1315 anyway?
-    disk_ret(regs, DISK_RET_EPARAM);
-}
-
-void VISIBLE16
-handle_40(struct bregs *regs)
-{
-    debug_enter(regs, DEBUG_HDL_40);
-    handle_legacy_disk(regs, regs->dl);
-}
-
-// INT 13h Fixed Disk Services Entry Point
-void VISIBLE16
-handle_13(struct bregs *regs)
-{
-    debug_enter(regs, DEBUG_HDL_13);
-    u8 extdrive = regs->dl;
-
-    if (CONFIG_CDROM_EMU) {
-        if (regs->ah == 0x4b) {
-            cdemu_134b(regs);
-            return;
-        }
-        if (GET_LOW(CDEmu.media)) {
-            u8 emudrive = GET_LOW(CDEmu.emulated_drive);
-            if (extdrive == emudrive) {
-                // Access to an emulated drive.
-                struct drive_s *cdemu_gf = GET_GLOBAL(cdemu_drive_gf);
-                if (regs->ah > 0x16) {
-                    // Only old-style commands supported.
-                    disk_13XX(regs, cdemu_gf);
-                    return;
-                }
-                disk_13(regs, cdemu_gf);
-                return;
-            }
-            if (extdrive < EXTSTART_CD && ((emudrive ^ extdrive) & 0x80) == 0)
-                // Adjust id to make room for emulated drive.
-                extdrive--;
-        }
-    }
-    handle_legacy_disk(regs, extdrive);
-}
-
-// record completion in BIOS task complete flag
-void VISIBLE16
-handle_76(void)
-{
-    debug_isr(DEBUG_ISR_76);
-    SET_BDA(disk_interrupt_flag, 0xff);
-    pic_eoi2();
-}