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4,012 Commits 7 Branches 121 Tags 500 MiB
74a2f717b3
Commit Graph

98 Commits

Author SHA1 Message Date
Thomas Harte
74a2f717b3 Turns down the composite signal amplitude a little, to help colour distinctness. 2018-08-01 18:52:42 -04:00
Thomas Harte
c91eaaf8da Takes a stab at double low-res graphics. 2018-07-31 21:45:09 -04:00
Thomas Harte
a36f37d240 Introduces a 1/14th delay in output of double high res. 2018-07-31 21:29:51 -04:00
Thomas Harte
c773d3501a Implements the INTC8ROM switch. 
Finally causing the Zellyn tests to pass! Is this nightmare behind me?
 2018-07-31 19:00:46 -04:00
Thomas Harte
5810f9b3f9 Fixes high resolution address range and switching logic. 2018-07-30 23:23:18 -04:00
Thomas Harte
3f56683342 Fixes order of deserialisation between auxiliary and base RAM. 2018-07-30 23:08:45 -04:00
Thomas Harte
16ccbdefd6 Of course, | has higher precedence than ?. Classic! 2018-07-30 23:08:22 -04:00
Thomas Harte
e9aaa5bbdf Factors out the page-mapping function. 
For one less potential source of failure.
 2018-07-30 22:23:48 -04:00
Thomas Harte
ecb26e3281 Corrections: slot_C3_rom_ works the other way around; 80STORE doesn't affect most of RAM but does always affect the text screen. 
Also factored out `set_zero_page_paging` for consistency.
 2018-07-30 19:54:25 -04:00
Thomas Harte
5aa0b17720 Improves IIe paging further. 2018-07-29 23:02:27 -04:00
Thomas Harte
632b37ecec Attempts an implementation of auxiliary memory. 2018-07-29 10:41:12 -04:00
Thomas Harte
c905de2e40 Restores IIe ROM-over-card paging. 2018-07-28 13:31:25 -04:00
Thomas Harte
bc2afe69e1 Accepting that memory mapping on a IIe is more complicated than I anticiapted, introduces mapping for all pages. 
Also picks a name for the Unenhanced Apple IIe ROM.
 2018-07-28 13:02:49 -04:00
Thomas Harte
5f2b9b2d5a Implements the alternative zero page soft switch. 2018-07-25 22:10:21 -04:00
Thomas Harte
5c4506a9db Talks the IIe into proceeding to a beep and an improperly-formed logo. 2018-07-25 21:43:12 -04:00
Thomas Harte
55a6431fb3 Puts in enough logic to be able to launch a non-functional IIe. 2018-07-25 18:58:34 -04:00
Thomas Harte
ede2696a77 Edges further towards implementing the IIe video subsystem. 
All video-specific switches are in place, and mostly honoured, and a IIe machine configuration is advertised at least.
 2018-07-24 22:15:42 -04:00
Thomas Harte
59b9e39022 Starts the process of supporting the Apple IIe graphics modes. 
Albeit that I'm not yet even up on the proper soft switches.
 2018-07-23 22:14:41 -04:00
Thomas Harte
7e58a44771 Renames ConfigurationTarget to MediaTarget as per its newly-reduced interface. 2018-07-10 21:32:28 -04:00
Thomas Harte
3862fdb44c Simplifies initialisation procedure for all machines. 
With the side effect of allowing every machine to try to load only the ROMs that it needs.
 2018-07-10 20:00:46 -04:00
Thomas Harte
c97c5fa03a [Re-]recalibrates CRT retrace period and affected view windows. 
In the hope of moving the CPC closer to the real CTM visible area.
 2018-07-05 22:07:18 -04:00
Thomas Harte
640a84d456 Shift the h-within-v pulse to eliminate a curved top line. 2018-06-24 11:27:18 -04:00
Thomas Harte
55ab305dbf Introduces equalisation pulses for the Apple II. 2018-06-23 22:11:39 -04:00
Thomas Harte
6a3702a5c7 Reduces space for floating point accuracy errors. 2018-06-16 22:22:40 -04:00
Thomas Harte
51da21b844 Formally introduces keyboard-as-joystick for the Mac, and fixes discovered joystick issues. 
Specifically:
* digital to analogue conversion not returning to centre;
* Apple II axes being the wrong way around; and
* Apple II buttons using improper selection logic.
 2018-06-13 19:22:34 -04:00
Thomas Harte
0be19d8de7 Ensures analogue channels which are already charging don't abide by c070. 2018-06-13 18:16:02 -04:00
Thomas Harte
f26e4734b3 Adds use of joystick input in the Apple II. 2018-06-12 22:21:43 -04:00
Thomas Harte
f1b430338e Makes the Apple II a joystick machine. 
Albeit that the values supplied to its joysticks do not currently make it into the emulated state.
 2018-06-11 22:16:32 -04:00
Thomas Harte
69da00fcfb Modifies test slightly for usual RWTS16 location. 
Also eliminates messy print logging.
 2018-06-10 18:41:09 -04:00
Thomas Harte
d576ff1172 Exposes DOS 3.3 acceleration as an option. 
Albeit with an unhelpful label in the macOS GUI for now.
 2018-06-10 18:28:29 -04:00
Thomas Harte
af54666c23 Implements RWTS acceleration. 2018-06-10 17:58:16 -04:00
Thomas Harte
12c59ede09 Adds writeback of track location. 2018-06-09 20:34:12 -04:00
Thomas Harte
b4d0d4fff6 Starts building out some fast-loading infrastructure for DOS 3.3. 2018-06-09 17:29:14 -04:00
Thomas Harte
dde9b73a22 Creates the through-path that will be necessary for RWTS acceleration. 2018-06-09 12:51:53 -04:00
Thomas Harte
fb4bb21bf6 Ensures an objective copy of the bus address is kept, and forwarded to cards. 2018-06-08 20:12:15 -04:00
Thomas Harte
d380595ad4 Unrolls the loops for slightly fewer conditionals. 2018-06-03 07:27:03 -04:00
Thomas Harte
d84b8700a3 Switches the Apple II to one byte per pixel. 
Just trying to get it right for now; optimisation to come.
 2018-06-02 22:03:45 -04:00
Thomas Harte
69dc3cc4d8 Switches to using the same varying for byte and subpixel selection. 2018-06-01 22:52:29 -04:00
Thomas Harte
8dd7c6ef23 Eliminates 'reversed_c' as I no longer believe low-resolution colour numbers are reversed. 
Also gets explicit about phase.
 2018-05-29 22:30:45 -04:00
Thomas Harte
b2464598d0 Forces the Apple II bus handler call inline. 2018-05-28 18:21:01 -04:00
Thomas Harte
928aab13dc Introduces more granular clocking announcements to the Disk II. 
As well as making it accept the clock rate it'll actually receive, to supply to the drives, so that they spin at the proper speed.
 2018-05-28 17:19:29 -04:00
Thomas Harte
db8d8d8404 Commutes Sleeper to ClockingHint::Source, making state more granular. 2018-05-27 23:17:06 -04:00
Thomas Harte
a4d7703efd Adds missing #include. 2018-05-23 22:28:00 -04:00
Thomas Harte
f9c25372c2 Ensures cards get messaged regardless of memory area. 2018-05-22 21:49:34 -04:00
Thomas Harte
ea92363e6c Attempts to get the Apple II to honour the AppleII::Card select constraints appropriately. 2018-05-22 20:34:59 -04:00
Thomas Harte
015f692bd3 The Disk II card now commutes Disk II sleep activity to select constraints. 2018-05-22 19:51:39 -04:00
Thomas Harte
80d34f5511 Specs out a new AppleII::Card interface. 
Doesn't yet fully implement it on the Apple II side though.
 2018-05-21 20:54:53 -04:00
Thomas Harte
7b7beb13a3 Eliminates the fiction of setting and getting registers. 
The Disk II seems lower level than that; it will read the data bus whenever it likes, it is the programmer's responsibility to keep up with that. It also reserves the right not to load the bus regardless of whether it receives a read or write access.
 2018-05-17 21:39:11 -04:00
Thomas Harte
7c2721d54d Adjusted number again. But we'll see. 2018-05-15 20:43:13 -04:00
Thomas Harte
8907d0a9a7 Adds a low-pass filter to the Apple II's audio. 2018-05-14 21:56:14 -04:00