;;********************************************************************************
;; @mainpage 8-bit Breadboard Computer with W65C02S Processor
;; This repo contains the assembly code for my [6502-project](https://quintern.xyz/de/posts/2021_6502).
;; 
;; The assembler used for this project is the excellent [ca65](https://github.com/cc65/cc65).
;; After assembling it, the binary is loaded onto the  EEPROM using [my *eeprom.py* script](https://git.quintern.xyz/MatthiasQuintern/AT28C256-rpi-util) on a Raspberry Pi 4B.
;; 
;; @section main_os Operating System
;;   ... is probably a far stretch, since it is just the programs I wrote pieced together. My "OS" consists of these functionalities:
;;   - Supported Hardware:
;;       - 4x4 Matrix Keypad
;;       - 4x16 Characters LCD Display
;;       - PS/2 Keyboard
;;       - SPI Connection to an Arduino
;;   - Software
;;       - @ref ps2_keyboard_printer "Keyboard" and @ref keypad_printer "keypad printer": Prints the characters you press on to the lcd
;;       <!-- - Temperature: Shows the temperature using a dht sensor. *Work in progress, this does not work yet* -->
;;       - @ref print_slow "(Stylishly)" print @ref "str::strf" "formated strings" to the LCD
;;       - @ref sleep "Sleep"
;;       - Send @ref ps2_keyboard_util "various commands" to the keyboard
;;       - @ref ringbuffer "Ringbuffer"
;;   
;;   > It's not much, but it's honest work.
;;
;; @section main_hardware Hardware details
;;   @subsection main_hw_addr Address Space
;;     |Name|From|To|r/w|
;;     |---|---:|---:|:---:|
;;     |ZEROPAGE   |$00    |$ff    |`rw`|
;;     |STACK      |$100   |$1ff   |`rw`|
;;     |RAM        |$200   |$4fff  |`rw`|
;;     |SPI        |$5000  |$5fff  |`rw`|
;;     |VIA1       |$6000  |$600f  |`rw`|
;;     |VIA2       |$7000  |$700f  |`rw`|
;;     |ROM        |$8000  |$ffff  |`r `|
;;
;; 
;; @section main_software Software details
;;   @subsection main_sw_naming Naming conventions
;;     leading underscors `_` indicate a "private" label/variable, that is meant for internal use within the module only.
;;
;;     **Labels**:
;;     - **scopes**: snake case 
;;     - **subroutines** and **variables**: snake case (`scope::(_)fname_snake_case` or `scope::(_)varname_2`)
;;     - **macros**: camel case (`(_)GoodMacroname` or `scope_GoodMacroname`)
;;     - **constants** (eg. in ROM): upper case (`scope::(_)NICE_SYMBOLNAME`)
;;     - **enums**: upper case (`scope::(_)ENUM_NAME::ENUM_MEMBER`)
;;********************************************************************************

;;********************************************************************************
;; @defgroup applications
;; @brief Applications that do ... *something*
;;
;;********************************************************************************

;;********************************************************************************
;; @defgroup drivers
;; @brief Code that handles a physical device
;;
;;********************************************************************************

;;********************************************************************************
;; @defgroup utility
;; @brief Code that does something useful and is intended to be used in other code
;;
;;********************************************************************************

;;********************************************************************************
;; @defgroup system
;; @brief Core code
;;
;;********************************************************************************