diff --git a/Library-feature-coverage-per-platform.md b/Library-feature-coverage-per-platform.md
index 462cfb2..61e5a19 100644
--- a/Library-feature-coverage-per-platform.md
+++ b/Library-feature-coverage-per-platform.md
@@ -10,16 +10,16 @@ The following table shows which library features are implemented for which targe
 
 ### 6502 computers
 
-feature             | C64            | C16/Plus4       | C128           |VIC20| PET           |Atari|Apple 2|BBC Micro
---------------------|----------------|-----------------|----------------|-----|---------------|-----|-------|------
-`putchar`           | ✔️             | ✔️             | ✔️             | ✔️ | ⚠️<sup>1</sup> | ✔️ | ✔️   | ✔️ 
-`readkey`           | ✔️             | ✔️             | ✔️             | ✔️ | ✔️             | ✔️ | ✔️   | ❌ 
-`readline`          | ✔️<sup>2</sup> | ✔️<sup>2</sup> | ❌             | ✔️ | ❌             | ❌ | ✔️   | ❌ 
-`bell`              | ❌             | ❌             | ❌             | ❌ | ❌             | ❌ | ✔️   | ❌ 
-`set_bg_color`      | ✔️             | ✔️             | ✔️             | ✔️ | ➖             | ❌ | ❌   | ❌ 
-`set_border`        | ✔️             | ✔️             | ✔️             | ✔️ | ➖             | ❌ | ➖   | ➖ 
-hardware randomness | ✔️<sup>3</sup> | ❌             | ✔️<sup>3</sup> | ❌ | ❌             | ❌ | ❌   | ❌ 
-joystick support    | ✔️             | ❌             | ✔️             | ❌ | ❌             | ❌ | ❌   | ❌ 
+feature             | C64            | C16/Plus4       | C128           |VIC20| PET           | Atari           |Apple 2|BBC Micro
+--------------------|----------------|-----------------|----------------|-----|---------------|-----------------|-------|------
+`putchar`           | ✔️             | ✔️             | ✔️             | ✔️ | ⚠️<sup>1</sup> | ✔️             | ✔️   | ✔️ 
+`readkey`           | ✔️             | ✔️             | ✔️             | ✔️ | ✔️             | ✔️             | ✔️   | ❌ 
+`readline`          | ✔️<sup>2</sup> | ✔️<sup>2</sup> | ❌             | ✔️ | ❌             | ❌             | ✔️   | ❌ 
+`bell`              | ❌             | ❌             | ❌             | ❌ | ❌             | ❌             | ✔️   | ❌ 
+`set_bg_color`      | ✔️             | ✔️             | ✔️             | ✔️ | ➖             | ❌             | ❌   | ❌ 
+`set_border`        | ✔️             | ✔️             | ✔️             | ✔️ | ➖             | ❌             | ➖   | ➖ 
+hardware randomness | ✔️<sup>3</sup> | ❌             | ✔️<sup>3</sup> | ❌ | ❌             | ✔️<sup>4</sup> | ❌   | ❌ 
+joystick support    | ✔️             | ❌             | ✔️             | ❌ | ❌             | ❌             | ❌   | ❌ 
 
 
 ##### Notes:
@@ -30,6 +30,8 @@ joystick support    | ✔️             | ❌             | ✔️
 
 3. Uses the SID chip.
 
+4. Uses the POKEY chip.
+
 ### 8080/Z80/6809 computers
 
 feature             | ZX Spectrum |PC-88|CPC |MSX | TRS-80 | Tandy CoCo | Z1013 |CP/M