24 Commits

Author	SHA1	Message	Date
Thomas Harte	38aec44d85	Made sufficient changes for the Vic itself to believe it can recast a PRG as a tape and insert it that way. So now the ball is in the court of: how the heck are Commodore tapes encoded?	2016-08-15 19:44:41 -04:00
Thomas Harte	d9016909ed	Added some wiring for PAL/NTSC mode switching on the Vic, making an attempt to simplify the whole loop of having different clock rates.	2016-08-14 13:33:20 -04:00
Thomas Harte	a547b7e1d8	Took basic steps towards supporting memory expansions.	2016-08-13 17:21:25 -04:00
Thomas Harte	142774be37	Collapsed 6560 template to a more direct loop, albeit with quite a bit still left to fix.	2016-08-09 21:10:53 -04:00
Thomas Harte	12bad8f23f	Turned the 6560 into an ordinary template, similar to the rest of the project, albeit right now with a fairly shonky internal implementation. Fixed a Mac-specific interface sizing issue.	2016-08-09 20:41:05 -04:00
Thomas Harte	285a288c80	Switched to two cycles of options loading, meaning that they get set before files are inserted. Might need some further work?	2016-08-07 21:48:09 -04:00
Thomas Harte	be54d8040e	Made a first stab at having automatic loading be optional. But things are currently arranged such that the machine options are communicated too late to have an effect. So work to do.	2016-08-06 17:39:27 -04:00
Thomas Harte	3e65450a54	Converted the 6560 fully into a template; worked on allowing the typer to run at a much faster rate where hardware has some trigger by which it can request the next key.	2016-08-06 14:33:24 -04:00
Thomas Harte	740ea0b7e2	Added overflow-flag setting logic and ensured disk ROM gets through regardless of ROM/disk installation order.	2016-07-31 19:33:18 -04:00
Thomas Harte	6cfc514c2d	Made the rote changes necessary to attempt to open and to supply a G64 to the Vic.	2016-07-10 12:57:17 -04:00
Thomas Harte	d8334edf4a	Started trying to clean up, including commuting the C1540 source file name to match its class name but mainly by adding documentation.	2016-07-10 07:46:20 -04:00
Thomas Harte	c0ab45a73d	Disabled a bunch of the caveman debug logging.	2016-07-09 22:29:11 -04:00
Thomas Harte	f589d639db	Okay, so it seems that sync also works the other way around.	2016-07-09 22:25:44 -04:00
Thomas Harte	693c8b2438	After all that, it seems likely that inputs just aren't inverted for the Vic.	2016-07-09 20:03:38 -04:00
Thomas Harte	81e6cc34e5	Per the ROM disassembly, the Vic's VIA outputs are inverted for the benefit of the serial bus.	2016-07-07 06:57:21 -04:00
Thomas Harte	c9479f923b	The inversion of truth was clearly just a problematic API. Got explicit. LineLevel might need to become more pervasive.	2016-07-07 06:44:13 -04:00
Thomas Harte	dcb86a027a	Okay, so the 1540 doesn't toggle the actual attention line. I don't know what it does yet but this helps.	2016-07-06 22:31:14 -04:00
Thomas Harte	428fcdb978	Centralised and improved serial logging.	2016-07-06 07:46:21 -04:00
Thomas Harte	11fc43aa04	Made an attempt to allow the 1540 to talk back to the Vic, and to receive interrupts. Also slightly disambiguated debugging logging.	2016-07-05 19:12:43 -04:00
Thomas Harte	d16b79073e	Further fleshing out: added a serial port for the serial bus.	2016-07-05 17:27:02 -04:00
Thomas Harte	86dabd007b	Furthered fleshing out of the 1540. Though it doesn't yet receive a ROM so won't even attempt to do anything meaningful.	2016-07-05 16:39:18 -04:00
Thomas Harte	a25fcc7190	Made a first attempt at wiring back serial port input.	2016-07-05 16:10:54 -04:00
Thomas Harte	d2cded7b59	Attempted to separate out the concept of a serial port and a serial bus, since the bus may be shared, and to establish half duplex communications from the Vic.	2016-07-05 14:55:20 -04:00
Thomas Harte	0d3d0fbe4d	Created a namespace for Commodore and an empty container file for the 1540[/1] implementation.	2016-07-05 13:28:27 -04:00