Thomas Harte
|
dab3580111
|
Experimental: can I afford a lower sampling rate if there's a low-pass filter in effect?
|
2016-08-22 22:18:05 -04:00 |
|
Thomas Harte
|
1541273785
|
Moved responsibility for throwing in a low-pass filter up to the Vic, appropriately.
|
2016-08-21 18:13:31 -04:00 |
|
Thomas Harte
|
99157ad6b2
|
Ensured the 6560 knows its real audio clock on a PAL machine; removed some stray semicolons.
|
2016-08-19 13:35:34 -04:00 |
|
Thomas Harte
|
e985c72ce8
|
Removed a dead special case.
|
2016-08-19 12:23:06 -04:00 |
|
Thomas Harte
|
4edd1214f1
|
This has now successfully loaded its first PRG-as-a-tape.
|
2016-08-19 10:58:42 -04:00 |
|
Thomas Harte
|
2935848f35
|
Adopted header/header/data/data pattern. But still not complete joy.
|
2016-08-17 08:03:34 -04:00 |
|
Thomas Harte
|
dfe9fb83ef
|
This proves that bytes are being deposited properly. For the first 36 anyway, and with no announcement.
|
2016-08-16 21:09:50 -04:00 |
|
Thomas Harte
|
12f8aff65b
|
Lengths I'd taken seem to have been for dipoles, not single poles. So I just doubled the clock rate. Also I was producing each dipole as high then low, when they should probably be low then high. The Vic now at least recognises that something is happening on the tape.
|
2016-08-16 19:46:53 -04:00 |
|
Thomas Harte
|
ca2dc6b6c4
|
Ensured ROMs survive in the new memory model.
|
2016-08-15 19:56:01 -04:00 |
|
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
|
547aefb696
|
Slightly adjusted PRG strategy, made a note about where next.
|
2016-08-14 16:36:42 -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
|
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
|
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
|
5d40d70c92
|
Fixed 6560 addressing error, added an autotyper for Vic disks (more work potentially needed), fixed semantics for testing whether a 6502 is about to reset.
|
2016-08-01 10:32:32 -04:00 |
|
Thomas Harte
|
b43a7381ae
|
Fixed framing and first-byte-after-sync signalling. Hacked together as parts of it are, loading now appears to work!
|
2016-08-01 04:25:11 -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
|
ada2f073e0
|
Completed handing of the disk all the way to the 1540.
|
2016-07-10 16:24:46 -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
|
4ca6883f7c
|
Disabled attachment of a 1540 again, as I probably need to move to opening an actual disk image next.
|
2016-07-10 08:03:36 -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
|
1baf21827c
|
Since the ROM is well disassembled, let's actually try to be a 1541 first.
|
2016-07-06 22:17:32 -04:00 |
|
Thomas Harte
|
f64cd8cfcb
|
Quick fixes properly to declare the DriveVIA, to ensure its interrupts take effect, and to wire ATN IN to CA1 rather than CB2.
|
2016-07-06 20:22:46 -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
|
d1eea6943d
|
Ensured the 1540 ROM gets installed, at least.
|
2016-07-05 16:54:25 -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 |
|