Thomas Harte
|
ca42abab70
|
Doubled up to ensure that every byte that should be inspected is represented. This makes it clearer that I'm on the right road. A garbled version of 'Amstrad 64k Microcomputer' can be discerned, in a weird grayscale and with the right-hand column missing and skewed output as a result.
|
2017-08-01 07:56:44 -04:00 |
|
Thomas Harte
|
933d69a256
|
Fixed slightly: the CPC wiki has a typo. It's 12 and 13 that move up to 14 and 15.
|
2017-08-01 07:51:13 -04:00 |
|
Thomas Harte
|
10a5581aea
|
Made first attempt at offering some sort of pictographic of actual RAM contents.
|
2017-08-01 07:34:12 -04:00 |
|
Thomas Harte
|
3ae699964f
|
Ensured an actual pixel stream is supplied for pixel regions. Though it's just a long stream of white pixels for now. So visual output is unchanged.
|
2017-08-01 07:24:29 -04:00 |
|
Thomas Harte
|
42dd27c9b1
|
Shunted method bodies inline, given that there's no need for a declaration/definition distinction.
|
2017-07-31 22:39:25 -04:00 |
|
Thomas Harte
|
3df13cddd4
|
As per my keenness for cleanliness improvements corresponding to my ever-increasing C++ ability: turned the Amstrad into something that a factory produces, allowing me completely to hide a bunch of implementation details.
|
2017-07-31 22:32:04 -04:00 |
|
Thomas Harte
|
c2253c1e0f
|
Fixed multiplier: the dot clock I've used to instantiate the CRT is the pixel clock, not the character clock.
|
2017-07-31 22:17:46 -04:00 |
|
Thomas Harte
|
f742fd5d4a
|
Made basic attempt to get something on screen: white where the display is enabled, black for the border.
|
2017-07-31 22:13:20 -04:00 |
|
Thomas Harte
|
69b99fe127
|
Transferred ownership of the CRT to the CRTC bus handler, to give it easy access.
|
2017-07-31 22:04:52 -04:00 |
|
Thomas Harte
|
e28829bd1b
|
Corrected CRTC timing, gave it someone to talk to and a means with which to talk.
|
2017-07-31 20:14:46 -04:00 |
|
Thomas Harte
|
68ceeab610
|
Created a 6845 class and started pushing data at it and clocking it. It doesn't currently have the concept of a bus but will do, hence the in-header implementation.
|
2017-07-31 19:56:59 -04:00 |
|
Thomas Harte
|
68dca9d047
|
Made a first attempt at ROM paging, with pretty much the same scheme that'll be needed for 128kb support.
|
2017-07-31 19:37:28 -04:00 |
|
Thomas Harte
|
d88ca151f4
|
Added a first attempt at output port decoding. Just logging for now.
|
2017-07-31 19:25:10 -04:00 |
|
Thomas Harte
|
3c90218c3d
|
With a very basic stab at something a bit like the memory map (sans paging), execution begins.
|
2017-07-31 19:15:43 -04:00 |
|
Thomas Harte
|
afd409c883
|
Ensured that ROM images are loaded and passed to the Amstrad CPC.
|
2017-07-31 18:44:49 -04:00 |
|
Thomas Harte
|
9c04d851e4
|
Added the basics necessary to get the CPU ticking over, at a nominal 4Mhz but with the wait states that I currently believe to be accurate.
|
2017-07-31 07:29:50 -04:00 |
|
Thomas Harte
|
1d6fe11906
|
Added an instance of Outputs::CRT::CRT. So progress is now: select CDT, up comes a blank window.
|
2017-07-31 07:16:51 -04:00 |
|
Thomas Harte
|
c0f1313830
|
Performed sufficient wiring to get to the point where attempting to load a CDT creates an instance of the Amstrad CPC and then fails only because the thing vends a nullptr CRT.
|
2017-07-30 22:05:29 -04:00 |
|