VirtualBox 4.3.28 - VENOM patch

$ diff VirtualBox-4.3.26/src/VBox/Devices/Storage/DevFdc.cpp VirtualBox-4.3.28/src/VBox/Devices/Storage/DevFdc.cpp
1740c1740
<     pos = fdctrl->data_pos;
---
>     pos = fdctrl->data_pos % FD_SECTOR_LEN;
1964c1964
<     /* XXX: should set main status register to busy */
---
>     fdctrl->msr &= ~FD_MSR_RQM;
2142c2142,2147
<     if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
---
>     /* This command takes a variable number of parameters. It can be terminated
>      * at any time if the high bit of a parameter is set. Once there are 6 bytes
>      * in the FIFO (command + 5 parameter bytes), data_len/data_pos will be 7.
>      */
>     if (fdctrl->data_len == 7 || (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80)) {
>
2145c2150,2152
<             fdctrl->fifo[0] = fdctrl->fifo[1];
---
>             /* Data is echoed, but not stored! */
>             fdctrl->fifo[0] = fdctrl->data_len > 2 ? fdctrl->fifo[1] : 0;
>             fdctrl->fifo[1] = fdctrl->data_len > 3 ? fdctrl->fifo[2] : 0;
2152,2157c2159,2160
<     } else if (fdctrl->data_len > 7) {
<         /* ERROR */
<         fdctrl->fifo[0] = 0x80 |
<             (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
<         fdctrl_set_fifo(fdctrl, 1, 0);
<     }
---
>     } else
>         fdctrl->data_len++; /* Wait for another byte. */
2222c2225
<     { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command },
---
>     { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 1, fdctrl_handle_drive_specification_command },
2284c2287
<     fdctrl->fifo[fdctrl->data_pos++] = value;
---
>     fdctrl->fifo[fdctrl->data_pos++ % FD_SECTOR_LEN] = value;