ZX-ESPectrum-IDF v1.0 beta 5.2

Changes:

• Updated pwm audio library to v1.1.1
• Sound and video sync is perfect now. This results in totally clean audio output. No more clicks, artifacts or desync issues.
• Better beeper emulation. Emulating EAR and MIC bits and output levels according to issue 2 ULA levels (Thanks zx81!)
• Better AY emulation. AY audio buffer is now built during frame. This makes effects like voice in Robocop work like charm.
• AY vs. Beeper output levels adjusted.

Bugfixes:

• Sometimes, after emu start or after sna, z80 or snapshot load, sound isn't as clean as usual. This is fixed.

Known issues:

• In rare cases, sound doesn't get initialized on emu start or after sna, z80 or snapshot load. Restarting ESP32 (using F12 or powering off/on) solves it always.

How to Flash:

Use Flash download tools from Espressif to flash it into your board:

Open the ESP32 Flash Download Tool.
Select "ESP32" as chipType.
Select "Develop" as workMode.

Once started:

Select COM Port (whichever one your board has taken).
Select Baud rate (460800 works fine for me).

Finally:

Load .bin file, set 0x0 as address, check it and press START.
Wait until status panel shows "FINISH", power off and power on your board and ENJOY!

ZX-ESPectrum-IDF v1.0 beta 5.1

Bugfixes:

• AY envelope type register management was incorrect. It is now corrected and everything sounds ok.

How to Flash:

Use Flash download tools from Espressif to flash it into your board:

Open the ESP32 Flash Download Tool.
Select "ESP32" as chipType.
Select "Develop" as workMode.

Once started:

Select COM Port (whichever one your board has taken).
Select Baud rate (460800 works fine for me).

Finally:

Load .bin file, set 0x0 as address, check it and press START.
Wait until status panel shows "FINISH", power off and power on your board and ENJOY!

ZX-ESPectrum-IDF v1.0 beta 5

New features:

• AY-3-8912 emulation complete!

Changes:

• Sound quality improved a lot through better comprension and use of pwm_audio lib.
• Improved border management in Ports::output. It solves a glitch in Escher2 48K and ULA128 Timing test which where driving me crazy ;D
• More optimizations: emu is a little bit faster.
• Optimized RAM memory consumption. Emu should be more stable now and now there's more RAM free for future improvements :)

Bugfixes:

• Corrected a bug in delay calcs which produced hangs after more than about 1,19 hours with a menu opened.

How to Flash:

Use Flash download tools from Espressif to flash it into your board:

Open the ESP32 Flash Download Tool.
Select "ESP32" as chipType.
Select "Develop" as workMode.

Once started:

Select COM Port (whichever one your board has taken).
Select Baud rate (460800 works fine for me).

Finally:

Load .bin file, set 0x0 as address, check it and press START.
Wait until status panel shows "FINISH", power off and power on your board and ENJOY!

ZX-ESPectrum-IDF v1.0 beta 4

New features:

• Floating bus emulated!
• Active mode (48K, 128K) now shows on main menu.
• AY emulation is now selectable in 48K mode.
• Joystick mode (Cursor, Kempston) selectable in realtime.
• Cyclic menu movement (thanks David Crespo!).

Changes:

• Optimized video generation (about 10% speed boost).
• Optimized memory access (thanks Ackerman!) and contention code (about 10% speed boost too).
• Perfect timings in 48K and 128K mode (thanks to Azesmbog for testing and providing very valuable info to make the emu more precise).
• Changed arch and rom selection to machine selection: ZX Spectrum 48K and ZX Spectrum 128K. Sinclair ROM in both cases.
• Moved sound post proccessing to second core.

Bugfixes:

• Beeper sound generation lag fixed in 128K mode (thanks David Crespo!).
• Arch bug on SNA and Z80 load corrected.

How to Flash:

Use Flash download tools from Espressif to flash it into your board:

Open the ESP32 Flash Download Tool.
Select "ESP32" as chipType.
Select "Develop" as workMode.

Once started:

Select COM Port (whichever one your board has taken).
Select Baud rate (460800 works fine for me).

Finally:

Load .bin file, set 0x0 as address, check it and press START.
Wait until status panel shows "FINISH", power off and power on your board and ENJOY!

ZX-ESPectrum-IDF v1.0 beta 3

New features:

• Interface localization in English and Spanish.
• Support for US English, Spanish, German, French and UK British keyboard layouts.
• New directory index system for supporting BIG number of files in SNA, Z80 and TAP directories (check README.md for details)

Changes:

• Kempston emulation activated by default and moved to Keypad direction keys and Right Alt.

Bugfixes:

• Fix for 16:9 screen not correctly centered.

How to Flash:

Use Flash download tools from Espressif to flash it into your board:

Open the ESP32 Flash Download Tool.
Select "ESP32" as chipType.
Select "Develop" as workMode.
Once started:

Select COM Port (whichever one your board has taken).
Select Baud rate (460800 works fine for me).
Finally:

Load .bin file, set 0x0 as address, check it and press START.
Wait until status panel shows "FINISH", power off and power on your board and ENJOY!

ZX-ESPectrum-IDF v1.0 beta 2

New feature:

• BMP screen capture: use PrtScr to dump a screen capture in BMP format to /scr directory on SD Card.

Bugfixes:

• Fixed boot if SD Card was selected as storage and no SD Card inserted.

How to Flash:

Use Flash download tools from Espressif to flash it into your board:

• Open the ESP32 Flash Download Tool.
• Select "ESP32" as chipType.
• Select "Develop" as workMode.

Once started:

• Select COM Port (whichever one your board has taken).
• Select Baud rate (460800 works fine for me).

Finally:

• Load .bin file, set 0x0 as address, check it and press START.

Wait until status panel shows "FINISH", power off and power on your board and ENJOY!

ZX-ESPectrum-IDF v1.0 beta 1

First beta release.

Use Flash download tools from Espressif to flash it into your board:

• Open the ESP32 Flash Download Tool.
• Select "ESP32" as chipType.
• Select "Develop" as workMode.

Once started:

• Select COM Port (whichever one your board has taken).
• Select Baud rate (460800 works fine for me).

Finally:

• Load .bin file, set 0x0 as address, check it and press START.

Wait until status panel shows "FINISH", power off and power on your board and ENJOY!