MiSTer updates and changelog

[bellwood420]

Arcade Breakout:
- Spinner support
- Reset support
- Separate input invert option
- Fix initial paddle position

[oldgit]

New Core: Acorn Atom
The predecessor to the BBC computer.

[alanswx]

New Core: Space Invaders:
Including 280Z ZZAp, Amazing Maze, Attack Force, Balloon Bomber, Blue Shark, Boot Hill, Clowns, Cosmo, Galaxy Wars, Gun Fight, Laguna Racer, Lunar Rescue, Lupin III, Sea Wolf, Space Encounters, Space Invaders II, Space Invaders Part II, Vortex
More Work, but need sound and other small fixes
Thank you to: oldgit (David Woods), Mike Coates, Gehstock, Gyurco, Shane Lynch, and lots of original Authors: Daniel Wallner, Mike J, Paul Walsh

[oldgit]

Acorn Atom:

New release 20201228
Changed SD access, allows LOAD and SAVE.

It may also fix the problems some have had with the boot.vhd in the games/AcornAtom folder.
I cannot test this as I couldn't get mine to not work.

[oldgit]

Acorn Atom:

Release 20201229
Changes to SD card access timing

[dshadoff]

New Core: ADCTest
Utility to test ADC input and signal

- Second entry in the "Utilities" section !
- Also a helpful set of information for those wishing to integrate audio input into another core, or to study the code of a relatively trivial core

[Sorgelig]

Main:
- CHD CD image support (Zakk)
- Send UART mode and speed to core.
- Fix menu hang on F12 autorepeat.
- Update logo in OSD.
- New config options for UART and Save States.
- arcade: support for load/save of NVRAM.

[Sorgelig]

ao486:
- Support for MT32-pi over USER I/O port
- Add mpuctl utility to control MT32-pi
Note: You have to update Main as well!

[Sorgelig]

Hardware:
- Add MT32-pi interface board

[Sorgelig]

Gameboy:
- Graphics, mappers and GB link fixes (paulb-nl)
- Save states (including FF/REW) (Robert Peip)

[bellwood420]

Arcade Breakout:
- Support for paddle/spinner button as serve button (by Sorgelig)
Note: mra needs to be updated as well

- Adjust hblank (by Sorgelig)

[Sorgelig]

Genesis:
- Add CRAM dots option (paulb-nl).
- SNAC tweaks (Shane Lynch).
- Fixes from srg320.
- Some other fixes.

[Sorgelig]

SMS:
- Update the framework.
- Support for custom aspect ratio.
- Revert to 4:3 aspect ratio for Game Gear mode.
- Fix overlapped OSD option.

[Sorgelig]

ao486:
- RTC: fix the timer (fast music in some games).
- MPU401: larger TX FIFO buffer to fix some games (Monkey Island).

[Sorgelig]

Gameboy:
- Improved rewind capture performance (Robert Peip)
- Fixes for IRQ (paulb-nl)

[Sorgelig]

Gameboy:
- Add option for raw colors (Robert Peip)

[Sorgelig]

Main:
- Add MT32-pi settings for AtariST and Minimig cores.
- arcade: don't load nvram if not found.
- megacd: fix CD audio broken in previous release (zakk4223).

AtariST:
- Add support of MT32-pi
Note: you have to update Main as well!

Minimig:
- Add support of MT32-pi
Note: you have to update Main as well!

[Sorgelig]

ao486:
- Reset i2s input samples (fix distorted audio).

[Sorgelig]

ColecoVision:
- Option to hide border.
- Support for custom aspect ratio.
- Update the framework.

[Sorgelig]

Arcade ComputerSpace:
- Improve explosion sound (bellwood420).
- Update the framework.
- Support for custom aspect ratio.
- Other minor updates and tweaks.

[Sorgelig]

Aquarius:
- Support for custom aspect ratio.
- Support forced_scandoubler.
- Update the framework.

[alanswx]

Coco2:
- Support for real tape through the ADC adapter
- Support for forced_scandoubler
- support for custom aspect ratio
- Update the framework

[Sorgelig]

Arduboy:
- Update the framework.
- Support for custom aspect ratio.
- Support forced_scandoubler INI option.

[lamarax]

New core: Do Donpachi (Cave 68000) by nullobject

-I've taken the liberty to post this here in the official thread, in case people don't monitor the "Arcade cores" subforum.

[alanswx]

Donkey Kong, Radar Scope
- Upgraded Donkey Kong from MiST
- Includes Radar Scope
- Also Includes Pest Place and DK 3