TZX-723Qa4

A Q8 style cheap tablet, but with an A33 SoC.

= Identification =

On the back of the device, the following is printed: The PCB has the following written on it: TZX-723Qa4

= Sunxi support =

Current status
Following devices are unsupported:
 * Wifi RDA5991
 * GSL1680 touch input
 * Accelometer Dmard09 or bma150?

Manual build

 * For building u-boot, use the Ippo_q8h_v1_2_a33_1024x600_defconfig target.
 * The .fex file can be found in sunxi-boards as https://raw.githubusercontent.com/linux-sunxi/sunxi-boards/0a446361bd82680bfd706761feeb53e32de3209c/sys_config/a33/TZX-723Qa4.fex ]

For some reason de fex file differs from the ippo_q8h_v1.2, the status of the MMC pins (PF*) are set to 1 instead of 2. Which requires patching of u-boot.

u-boot patch kernel patch

Everything else is the same as the manual build howto.

Mainline kernel
Use the sun8i-a33-ippo-q8h-v1.2.dts device-tree file for the mainline kernel.

= Tips, Tricks, Caveats =

Retrieving script.bin
Unlike, other allwinner devices,Script.bin is not present in the vfat partition(nanda) as file.

Instead, It is located 0x43000000, it's size is	0x00020000. script.bin can be extracted from /dev/mem using mmap.

= Adding a serial port (voids warranty) =

Device disassembly
= Pictures =

= See also =


 * Other Q8 format A33 based tablets.