Doctor V64
Main menu
As with many backup devices of its time, the Doctor V64 implemented text based menu driven screens. The menus were spartan and purely functional in nature.

Doctor V64

Section Title: Main menu
Table Section Text: As with many backup devices of its time, the Doctor V64 implemented text based menu driven screens. The menus were spartan and purely functional in nature.

Menu option	Effect

Alternate and BootCrack	This option would load a workaround for booting games. It only worked on certain types of game images.

Load Boot Crack Routine	An advanced option that allowed uploading of program code for the use of boot related problems.

Backup Card Auto → DRAM	This option would read a game cartridge and store it in the V64's RAM.

Backup Card Auto → PC	Same as the previous option, but would transfer the data to a PC through the V64's parallel port.

Manual Slide Show	Switch manual between Screenshots, you have made in VCD Movie

Auto Slide Show	Switch automatic between Screenshots, you have made in VCD Movie

V64 Self Test	Diagnostics routine would check all of V64's subsystems.

Fully Test 128M DRAM	Diagnostics routine would check only the first 128Mb of memory.

Fully Test 256M DRAM	Same as above but for those units with 256Mb of memory.

Upload DRAM Data → PC	Used in conjunction with then option "Backup Card Auto → DRAM" this option would transfer the contents of Doctor V64's RAM to a PC through the use of V64's parallel port.

Fix CRC Code → run game	Another boot related command to enable playing of game images. It would only work on certain types of backups.

Show Game Name in DRAM	An advanced option that would read the backup image and extract the game's name displaying it on the screen.

Upload V64 BIOS to PC	Another advanced option for DV64 developers. It would transfer Doctor V64's own program code to the PC through a parallel connection.

DX256 Upload to PC	This command allowed operation of specific features of the DX256 cartridge adapter (an alternate cartridge adapter sold by Bung).

PC Download to DX256

Swap Byte Order in DRAM	This command would convert the game image's endianness of a game image already loaded in RAM. Later bios revisions would do this automatically, deprecating this option.

Sentence(s)

Doctor V64's RAM has 128 megabits or 256 megabits.

final_sentence: Doctor V64's RAM has 128 megabits or 256 megabits.