Foenijs - Revision history

WF: /* Audio */

2026-01-27T10:59:32Z

Audio

← Older revision		Revision as of 06:59, 27 January 2026
Line 1:		Line 1:
	[https://white-flame.com/foenijs/ Foenijs] is a web-based emulator, whose unique purpose is ease of use in demonstrating the platform, as well as being a full-featured emulator.		[https://white-flame.com/foenijs/ Foenijs] is a web-based emulator, whose unique purpose is ease of use in demonstrating the platform, as well as being a full-featured emulator.

	It is decently complete & workable ~~so far~~, ~~notably missing sound and some hardware support~~.		It is decently complete & workable, with active refinement.

	== Current Status ==		== Current Status ==

			=== Platforms ===
			F256 series:

			* F256Jr
			* F256Jr2
			* F256K
			* F256K2

	=== CPU ===		=== CPU ===

	* 65c02 and 65816 fully implemented, cycle-accurate.		* 65c02 and 65816 fully implemented, cycle-accurate instruction timing.
	* Powerful debugging features (no labels yet, though).		* Powerful debugging features (no labels yet, though).
	* '''Turbo mode''' still emulates the entire machine, stopping to display a frame every 100ms. On an AMD 7940HS mini PC, <code>mandel.bas</code> turbos to 90 MHz (14x) in Firefox, and 140 MHz (22x) on Chromium.		* '''Turbo mode''' still emulates the entire machine, stopping to display a frame every 100ms. On an AMD 7940HS mini PC, <code>mandel.bas</code> turbos to 90 MHz (14x) in Firefox, and 140 MHz (22x) on Chromium.

	=== MMU ===		=== MMU ===
			Only 1 core is currently supported, with a combined memory model:
	* 512kB ~~1x mode~~ implemented for both CPUs.		* 512kB MMU implemented for both CPUs, in 8×8kB slots ('c' and partial '2x' compatible).
	* 65816 has access to flat RAM above bank 1.		* 65816 has access to flat RAM above bank 1, including bank $F0 IO addresses ('e' and '2x' compatible).

	=== Video ===		=== Video ===
	All standard ~~F256K/Jr~~ video features implemented directly in GPU shaders. Nothing from 2x yet.		All standard video features implemented directly in GPU shaders. Nothing from Core2x yet.

	* Rendering is per-rasterline, no mid-line changes will show.		* Rendering is per-rasterline, no mid-line changes will show.
	* Only I/O ~~changes~~ can change mid-frame, in-RAM redefinitions won't show.		* Only I/O registers can change mid-frame, in-RAM redefinitions won't show.
	* Vertical scrolling mid-frame and such latches on real hardware aren't implemented; everything is draw independently on the fly and can be more dynamic than the real thing.		* Vertical scrolling mid-frame and such latches on real hardware aren't implemented; everything is draw independently on the fly and can be more dynamic than the real thing.

	=== Audio ===		=== Audio ===
	~~Still need to tackle this~~. ~~Square waves from PSGs are the~~ only ~~thing implemented~~ right now.		All chips supported, with some rough edges remaining.

			* The VS1053b only does MP3, WAV, and MIDI right now.

	=== Joysticks ===		=== Joysticks ===
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	* Atari joystick emulated with cursor keys and <code>Z</code> <code>X</code> <code>C</code> for 3 buttons.		* Atari joystick emulated with cursor keys and <code>Z</code> <code>X</code> <code>C</code> for 3 buttons.

	=== Keyboards ===		=== Keyboards/Mouse ===

	* PS/2 ~~interface~~		* PS/2 mouse
	* ~~K2 internal~~ keyboard		* PS/2 keyboard
			* K-series mechanical keyboard

	=== SD Card ===		=== SD Card ===
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	K2 optical keyboard, maybe C64 keyboard		K2 optical keyboard, maybe C64 keyboard

	~~PS/2 Mouse support (mouse pointer works already)~~

	6809		6809

WF: /* Current Status */

2026-01-27T10:37:53Z

Current Status

← Older revision		Revision as of 06:37, 27 January 2026
Line 9:		Line 9:
	* 65c02 and 65816 fully implemented, cycle-accurate.		* 65c02 and 65816 fully implemented, cycle-accurate.
	* Powerful debugging features (no labels yet, though).		* Powerful debugging features (no labels yet, though).
	* '''Turbo mode''' still emulates the entire machine, stopping to display a frame every 100ms. <code>mandel.bas</code> turbos to ~~70MHz~~ on ~~an AMD 7940HS mini PC under Firefox~~.		* '''Turbo mode''' still emulates the entire machine, stopping to display a frame every 100ms. On an AMD 7940HS mini PC, <code>mandel.bas</code> turbos to 90 MHz (14x) in Firefox, and 140 MHz (22x) on Chromium.

	=== MMU ===		=== MMU ===

WF at 01:46, 1 January 2026

2026-01-01T01:46:08Z

← Older revision		Revision as of 21:46, 31 December 2025
Line 1:		Line 1:
	[https://white-flame.com/foenijs/ Foenijs] is a web-based emulator, whose unique purpose is ease of use in demonstrating the platform, as well as being a full-featured emulator.		[https://white-flame.com/foenijs/ Foenijs] is a web-based emulator, whose unique purpose is ease of use in demonstrating the platform, as well as being a full-featured emulator.

			It is decently complete & workable so far, notably missing sound and some hardware support.

	== Current Status ==		== Current Status ==
Line 35:		Line 37:

	=== SD Card ===		=== SD Card ===
	Only 1 slot ~~currently~~.		Only 1 slot at the moment. The current SD Card is held in IndexedDB browser storage, which will by default persist between sessions.

	* Create a blank card		* Create a blank card

WF: /* CPU */

2026-01-01T01:43:51Z

CPU

← Older revision		Revision as of 21:43, 31 December 2025
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	== Current Status ==		== Current Status ==

	=== ~~'''~~CPU~~'''~~ ===		=== CPU ===

	* 65c02 and 65816 fully implemented, cycle-accurate.		* 65c02 and 65816 fully implemented, cycle-accurate.
Line 14:		Line 14:
	* 65816 has access to flat RAM above bank 1.		* 65816 has access to flat RAM above bank 1.

	=== ~~'''~~Video~~'''~~ ===		=== Video ===
	All standard F256K/Jr video features implemented directly in GPU shaders. Nothing from 2x yet.		All standard F256K/Jr video features implemented directly in GPU shaders. Nothing from 2x yet.

Line 24:		Line 24:
	Still need to tackle this. Square waves from PSGs are the only thing implemented right now.		Still need to tackle this. Square waves from PSGs are the only thing implemented right now.

	=== ~~'''~~Joysticks~~'''~~ ===		=== Joysticks ===

	* USB controllers for NES/SNES interface.		* USB controllers for NES/SNES interface.
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	* K2 internal keyboard		* K2 internal keyboard

	=== ~~'''~~SD Card~~'''~~ ===		=== SD Card ===
	Only 1 slot currently.		Only 1 slot currently.

WF: Created page with "[https://white-flame.com/foenijs/ Foenijs] is a web-based emulator, whose unique purpose is ease of use in demonstrating the platform, as well as being a full-featured emulator. == Current Status == === '''CPU''' === * 65c02 and 65816 fully implemented, cycle-accurate. * Powerful debugging features (no labels yet, though). * '''Turbo mode''' still emulates the entire machine, stopping to display a frame every 100ms. `mandel.bas` turbos to 70MHz on an AMD 79..."

2026-01-01T01:43:13Z

Created page with "[https://white-flame.com/foenijs/ Foenijs] is a web-based emulator, whose unique purpose is ease of use in demonstrating the platform, as well as being a full-featured emulator. == Current Status == === '''CPU''' === * 65c02 and 65816 fully implemented, cycle-accurate. * Powerful debugging features (no labels yet, though). * '''Turbo mode''' still emulates the entire machine, stopping to display a frame every 100ms. <code>mandel.bas</code> turbos to 70MHz on an AMD 79..."

New page

[https://white-flame.com/foenijs/ Foenijs] is a web-based emulator, whose unique purpose is ease of use in demonstrating the platform, as well as being a full-featured emulator.

== Current Status ==

=== '''CPU''' ===

* 65c02 and 65816 fully implemented, cycle-accurate.
* Powerful debugging features (no labels yet, though).
* '''Turbo mode''' still emulates the entire machine, stopping to display a frame every 100ms. <code>mandel.bas</code> turbos to 70MHz on an AMD 7940HS mini PC under Firefox.

=== MMU ===

* 512kB 1x mode implemented for both CPUs.
* 65816 has access to flat RAM above bank 1.

=== '''Video''' ===
All standard F256K/Jr video features implemented directly in GPU shaders. Nothing from 2x yet.

* Rendering is per-rasterline, no mid-line changes will show.
* Only I/O changes can change mid-frame, in-RAM redefinitions won't show.
* Vertical scrolling mid-frame and such latches on real hardware aren't implemented; everything is draw independently on the fly and can be more dynamic than the real thing.

=== Audio ===
Still need to tackle this. Square waves from PSGs are the only thing implemented right now.

=== '''Joysticks''' ===

* USB controllers for NES/SNES interface.
* Atari joystick emulated with cursor keys and <code>Z</code> <code>X</code> <code>C</code> for 3 buttons.

=== Keyboards ===

* PS/2 interface
* K2 internal keyboard

=== '''SD Card''' ===
Only 1 slot currently.

* Create a blank card
* Download/upload full card image
* Download/upload/delete individual files
* Launch programs directly from directory browser.

== TODO & Wishlist ==
[Any and all mundane or insane ideas welcome.]

K2 optical keyboard, maybe C64 keyboard

PS/2 Mouse support (mouse pointer works already)

6809

680x0

Core2x video stuff

Core2x memory mapping