AL-A13-RT713

Hardware

 * 2x DDR3 Brand unreadable
 * ? NAND
 * AXP209 power management
 * Realtek RTL8188EUS wifi on separate PCB
 * USB OTG HOST (only with the adapter, and only a limited set of devices that work with the stock android kernel function correctly with the linux-sunxi kernel)
 * FocalTech ft5x TouchScreen (the gpl driver has some sort of basic functionality but is too flawed to be of any real use)
 * Freescale Semiconductor mma7660 3-Axis Orientation/Motion Detection Sensor

The usb (OTG ?) port can act as USB HOST as long as you have the correct adapter. It's really easy to make one: it's just a matter of shorting together pins 4 and 5 on the mini-B plug. I made my own for the Zaurus C1000 many years ago and I'm using it on this tablet now. You can read more on usb connectors on Wikipedia. Unfortunately the Allwinner socs have a custom USB host that requires a specific driver that is only present in the linux-sunxi kernel tree. Over time the host controller driver has gotten broken and only a small portion of the devices that actually work with the stock android kernel currently work right with the linux-sunxi kernel.

Here's a link to the fex file: xzpad700.fex

The original memdump
dram_clk         = 408 dram_type        = 3 dram_rank_num    = 1 dram_chip_density = 4096 dram_io_width    = 16 dram_bus_width   = 16 dram_cas         = 9 dram_zq          = 0x56b9487b dram_odt_en      = 0 dram_tpr0        = 0x42d899b7 dram_tpr1        = 0xa090 dram_tpr2        = 0x22a00 dram_tpr3        = 0x0 dram_emr1        = 0x4 dram_emr2        = 0x10 dram_emr3        = 0x0

Booting ordinary linux
I'm a Slackware enthusiast so I put up an article on the Docs Slackware wiki where I documented what I did to get a custom linux image booting on this device. I've done my best to keep it as neutral as possible. Have a look at the [article].

I've also an image builder tarball [here]. It's using the fedora boootloader and kernel but ships with a slackware mini root image. The image is also built rather then modified. With a little work it's possible to use any other distribution's root image.

Photos
Add device and device PCB photos.