LM80C firmware R2.11

• Set graphics 2 VRAM in a better way
• fixed TAB() function; new SCREEN 4 mode
• new PLOT, DRAW, and CIRCLE commands

LM80C firmware release R2.10

20191226: SIO init code cleaning & improved support for serial RX; added extended char codes (128-255) for 6x8 fonts; removed double chars in 8x8 fonts

LM80C firmware R2.9

Code cleaning; improved SOUND statement; revision of PSG code; revision of release notes; add support for cursor keys & cursor movements

LM80C firmware R2.8.2

New release R2.8.2: fixed a bug caused by changes introduces with previous R2.8.1 that lead to wrong functioning of several BASIC statements (LOCATE, VOLUME, etc..), keyboard input, system tick counter, and other.

LM80C firmware R2.8.1

Introduced support for SHIFT key for uppercase letters & alternate chars

LM80C firmware R2.8

20191207: New firmware release R2.8: first tests of interfacing of a keyboard of an old C16 through the PSG I/O ports

LM80C firmware R2.7

20191116 - Fixed a bug into the INKEY code, now the last is stored into a temp buffer for later checks

LM80C firmware R2.6

20191108 - Slowed down the INKEY sniffing code to be able to read a key pressure

LM80C firmware R2.5

20191026 - Revision of init PSG code; revision of serial buffer exp. code; fixed a bug into the video buffer manager

LM80C firmware R2.4a

20191016 - new release R2.4a. Charset for Screen 1 mode completed with new graphic chars.