diff --git a/Firmware-Compatibility.md b/Firmware-Compatibility.md
index 8dea319..c948f3c 100644
--- a/Firmware-Compatibility.md
+++ b/Firmware-Compatibility.md
@@ -1,15 +1,15 @@
## Mainboard
-This firmware is only compatible with Single Mainboards with STM32F103RCT6 and GD32F103RCT6 chips.
-Some boards have 6 wires on the hall sensors cable, with an additional white wire. For those you can use the alternate mapping by changing parameter BOARD_VARIANT in [config.h](https://github.com/EmanuelFeru/hoverboard-firmware-hack-FOC/blob/master/Inc/config.h)
+Typically, the mainboard brain is an [STM32F103RCT6](/docs/literature/[10]_STM32F103xC_datasheet.pdf), however some mainboards feature a [GD32F103RCT6](/docs/literature/[11]_GD32F103xx-Datasheet-Rev-2.7.pdf) which is also supported by this firmware.
+For the reverse-engineered schematics of the mainboard, see [20150722_hoverboard_sch.pdf](/docs/20150722_hoverboard_sch.pdf).
+
+Some boards have 6 wires on the hall sensors cable, with an additional white wire.
+For those you can use the alternate mapping by changing parameter BOARD_VARIANT in [config.h](https://github.com/EmanuelFeru/hoverboard-firmware-hack-FOC/blob/master/Inc/config.h)
-
-
## Split Boards
-For split boards with a STM32F130C8 or GD32F130C8 chip, please check following [Firmware](https://github.com/flo199213/Hoverboard-Firmware-Hack-Gen2) and its forks
+For split boards with a STM32F130C8 or GD32F130C8 chip, please check following [Firmware](https://github.com/flo199213/Hoverboard-Firmware-Hack-Gen2) and its forks.
-
For split boards with a GD32F103C8, please check following [Firmware](https://github.com/JohMah/Hoverboard-JC2015.7.31.V2.0-Hack)
