shaymanjohn / speccymac Goto Github PK

I've actually got ZIP parsing and extracting working in pure Swift in a standalone tool.
Just need to use that logic to make a new Loader.

Need to add all missing instructions, including the 'hidden' ops

The .z80 snapshot format is probably the next easiest to implement after .sna since it's not an audio format like .tzx and .tap.

It does use compression though but it's a very simple run-length encoding.

I'm gonna start work on this now.

Symbol Shift appears to not be mapped - Caps Shift is mapped to Shift, but I can't find Symbol Shift at all

Cobra and Green Beret
Must be caused by 1 or more incorrect instructions in the Z80 class

For instance my .z80 of Chase HQ stops with:

Unemulated Instruction:

RRC (HL)
Instruction number: E
Section: z80+cb

After clicking on OK choosing any other snapshot from the Load button causes the snapshot to load but not to run.

Now we've moved to a line based border (to allow hi-res border changes), often there are lines left in the border.
Faulty algorithm to blaim?

speccyMac/48.rom
speccyMac/speccyMac/Games/manic.sna
speccyMac/speccyMac/48.rom
speccyMac/speccyMac/manic.sna
speccyMac/manic.sna

I'm assuming the copy of the rom in the root directory is the surplus one?

I'm an old programmer from the Speccy and Amiga days using this project to try to get up to speed with old school style programming on new systems after twenty years away, so please excuse me making tons of newbie mistakes.

Before I realized I had to add any new game to the project via the XCode GUI as well as to the folder structure and the source code, I could not figure out what was wrong.

The debug output says "loaded" even though it failed.

I think .tap is the next file format that is both common and easy to implement since it's not an audio format and doesn't handle fastloaders.

I intend to work on it so you can assign it to me if you wish.

Running the released version on an M1 MacBook Air / Monterey

I see a window with the "Load game" button in the top right corner. The window is a grey colour like the Speccy's "white".

On loading any game I see no graphics but can hear all of the ones that start playing a tune or emitting sound effects. Games which set the border colour change the whole window to that colour. Manic Miner changes the window colour as the music plays, but nothing else is visible.

Evaluating sound options

Currently the emulator can only use the snapshot files compiled into it.
Users can only load new games by modifying the code and recompiling.

A file dialog is needed so we can load snapshots directly from the Downloads or Documents folder, etc.

Both a menu and allowing files to be dragged and dropped onto the emulator window would be good ways to implement it.