diff --git a/README.md b/README.md
index aa6332a..67b0067 100644
--- a/README.md
+++ b/README.md
@@ -39,3 +39,5 @@ by replacing `ROM.HEX` and rebuilding. Memory map:
 | 0xc000 | 0xffff | 16KB internal ROM |
 
 Thanks to Mike Chambers for the [fake6502](http://rubbermallet.org/fake6502.c) processor emulation core.
+
+For implementation notes see blog post *[pill_6502: 8-bit 6502 CPU and 6850 ACIA emulation on the STM32 blue pill to run Microsoft BASIC from 1977](https://satoshinm.github.io/blog/180113_stm32_6502_pill_6502_8_bit_6502_cpu_and_6850_acia_emulation_on_the_stm32_blue_pill_to_run_microsoft_basic_from_1977.html)*.