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-rw-r--r--FAQ-Build.md14
1 files changed, 14 insertions, 0 deletions
diff --git a/FAQ-Build.md b/FAQ-Build.md
index 7569baeb74..7a4727f7fc 100644
--- a/FAQ-Build.md
+++ b/FAQ-Build.md
@@ -134,4 +134,18 @@ avr-gcc -c -mmcu=atmega32u2 -gdwarf-2 -DF_CPU=16000000UL -DINTERRUPT_CONTROL_END
../../tmk_core/protocol/lufa/lufa.c:575: error: (Each undeclared identifier is reported only once
../../tmk_core/protocol/lufa/lufa.c:575: error: for each function it appears in.)
make: *** [obj_alps64/protocol/lufa/lufa.o] Error 1
+```
+
+
+## BOOTLOADER_SIZE for AVR
+Note that Teensy2.0++ bootloader size is 2048byte. Some Makefiles may have wrong comment.
+
+```
+# Boot Section Size in *bytes*
+# Teensy halfKay 512
+# Teensy++ halfKay 2048
+# Atmel DFU loader 4096 (TMK Alt Controller)
+# LUFA bootloader 4096
+# USBaspLoader 2048
+OPT_DEFS += -DBOOTLOADER_SIZE=2048
``` \ No newline at end of file