[repo] Updated readme and fw targets

Author: giuliof

README.md

@@ -3,14 +3,81 @@ Homemade floppy disk emulator for Apple II series computers
 
 > :warning: **Work in progress**: read carefully the README before trying to reproduce this project!
 
-![tinyDiskII](tinyDiskII.png)
+![tinyDiskII](docs/tinyDiskII.png)
 
 tinyDiskII is able to simulate an [Apple Disk II](https://it.wikipedia.org/wiki/Disk_II) both in reading and writing.
 Disk images are stored into a FAT16 formatted SD Card.
 Each disk image must be a DOS 3.3 floppy image, saved as .NIC.
 A cross platform .NIC <-> .DSK conversion tool will be available soon on this repository.
 Floppy formatting is currently not supported, but it is currently under developement.
 
+## BOM
+
+| Reference(s)                                  |        Description        |         Notes          |
+| :-------------------------------------------- | :-----------------------: | :--------------------: |
+| C1, C2, C3, C4, C5, C6, C8, C9, C10, C11, C12 |    0805 100n Capacitor    |                        |
+| D1, D2                                        |       0805 Red LED        |                        |
+| J1                                            |      2x3 male jumper      |     ICSP connector     |
+| J2                                            |     SMD SD Card slot      |                        |
+| J3                                            | THT USB B Mini connector  |  Mount for USB debug   |
+| J4                                            |    2x10 male connector    |    DiskII connector    |
+| R5, R6                                        |            330            |                        |
+| R2, R3, R4, R7, R8, R9, R10, R11, R12, R15    |            10k            |                        |
+| R13, R14                                      |             0             | Replaced with a bridge |
+| SW1                                           | RotaryEncoder with switch |                        |
+| U2                                            |        SN74LVC244         |   5V tolerant buffer   |
+| U3                                            |          CH340C           |  Mount for USB debug   |
+| U4                                            |      ATxmega16A4U-A       |          MCU           |
+| U5                                            |         74AHCT125         |     Level shifter      |
+| U7                                            |      0.96" OLED I2C       |      7-pin model       |
+| U10                                           |         AP1117-33         |  3v3 linear regulator  |
+
+
+### Do Not Place, reserved for future implementations:
+
+| Reference(s) |        Feature         |
+| :----------- | :--------------------: |
+| U1           | Flash/EEPROM interface |
+| C12          |           "            |
+| R1           |           "            |
+| C13, C14     |        USB ESD         |
+| R13, R14     |           "            |
+| D3, D4       |           "            |
+| C7           |     USB self reset     |
+| J5           |  Debugging connector   |
+
+## Schematics and PCB
+
+> :warning: Schematics and PCB layout can be found in `/schematics` folder. Please note that **rev1.0 hardware requires some physical changes**, so if you are interested to fabricare the PCB, check out the following updated schematic first.
+
+![tinyDiskII](docs/tinyDiskII-schematics-corrected.png)
+
+Manual fixes are highlighed with red lines:
+
+- LV_DISK_READ connected to U4 pin 21;
+- SD_WP connected to U4 pin 22;
+- SD_DETECT connected to U4 pin 23;
+- Added 10K pull-up resistor to DISK_WRITE_EN;
+- Pin 4 and 16 of U3 are shorted together.
+
+## Firmware
+
+Firmware source code is in `/firmware` folder.
+Code can be compiled on a linux/wsl machine through `make` command.
+Make sure you have `make` and `avr-gcc` toolchanin installed.
+Output binary will be generated as `/firmware/output/tinyDiskII.hex`.
+
+In `/firmware/tests` there are some unit tests that can run on host system.
+They can be compiled and executed with:
+
+```
+cd firmware/tests
+cmake -B build .
+cd build
+cmake --build .
+./tinyDiskII-tests
+```
+
 ## Contributors and references
 
 The whole projects borns as a custom implementation of Koichi Nishida's SdiskII [[1]](https://tulip-house.ddo.jp/digital/SDISK2/english.html) [[2]](https://github.com/suaide/SDisk2), which I used as a starting point for firmware developement.

docs/tinyDiskII-schematics-corrected.png

@@ -3,7 +3,7 @@
 ######################################################################
 
 # Name of the project
-PROJ_NAME    := appleii-floppy-emulator
+PROJ_NAME    := tinyDiskII
 
 ## FILES ##
 SRCS         := main.cpp

tinyDiskII.png docs/tinyDiskII.pngtinyDiskII.png renamed to docs/tinyDiskII.png

@@ -1,8 +1,8 @@
 cmake_minimum_required(VERSION 3.24)
 
-project(tinydiskii-tests)
+project(tinyDiskII-tests)
 
-add_executable(tinydiskii-tests
+add_executable(tinyDiskII-tests
   test_runner.cpp
 
   test_fat_filename.cpp
@@ -17,5 +17,5 @@ add_executable(tinydiskii-tests
 # SdCard image file must be copied in build directory
 file(COPY SAMPLEDISK.bin DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
 
-add_test(NAME tinydiskii-tests
-        COMMAND tinydiskii-tests)
+add_test(NAME tinyDiskII-tests
+        COMMAND tinyDiskII-tests)