ZX Spectrum emulator with esp8266 and ili9341 display.
Compiled using https://github.com/uli/Arduino_nowifi
Please check https://hackaday.io/project/169711-zx-spectrum-emulator-with-esp8266 for the libs i've used
- audio
- joystick
- load .z80 from SD
- load .z80 from EEPROM
- save .z80 to SD
Parts list:
1 es8266 nodemcu
1 ili9341 display with sd card adapter
2 4081 and gate
2 4017 decade counter
1 4503 3state buffer
1 npn transistor
1 40ohm speaker
1 2.2kohm resistor
5 100nf decoupling capacitors
6 10kohm resistors
15 1n4148 diodes
47 buttons
#update 2021-08 After an update of the regular 8266 core the nowifi core compile failed. Had to change 2 things:
-
to compile use extesa compiler 2.5. look in arduino/packages/esp8266/tools/xtesa-lx106-elf-gcc. if there is a versione > 2.5.0 then rename the newer folders (in example 3.0.0xxx to 0.3.0.0xxxx)
-
in case of missing .ld file change the platform.txt file to add the absolute path to the linker script compiler.c.elf.flags=-g {compiler.warning_flags} -O2 -nostdlib -Wl,--no-check-sections -u call_user_start -u _printf_float -u _scanf_float -Wl,-static "-L{compiler.libc.path}/lib" "-TC:/Users/it03281/Documents/Arduino/hardware/esp8266com/Arduino_nowifi-sdknowifi/tools/sdk/ld/{build.flash_ld}" -Wl,--gc-sections -Wl,-wrap,system_restart_local -Wl,-wrap,spi_flash_read
