Changes
/* On MiST-board CoreAmstrad version */
== Last news about this project ==
In May 2018, I programmed my first CPC game http://www.pouet.net/prod.php?which=75855 following JDVA youtube tutorial since january, they are based on CPCMania 2005's website knowledge about programing in CPC using SDCC. I think that if I do progress this way enough, I'll implement my own CPC testbenches, needed for reaching next realise of FPGAmstrad.
[[File:Mk2-cpc-600x350.png|thumbnail|Image converted to CPC by SuTeKH/Epyteo]]
In January 2018, Jepalza has ported FPGAmstrad from this wiki (Xilinx version, principe of concept 2011) on spanish ZX-Uno low-cost FPGA final platform (three times cheaper than MiST-board/same Xilinx chip poc 2011/chip used at 100%). So I bought a ZX-Uno to help around this fork, merging components. Normaly I can go a little further later (CRTC0, joystick), and then go back to MiST-board :)
Games that doesn't run are :
*'''ACPC_logon_system.dsk''': text scrolling lag. This demo will be used for horizontal ink calibration (when I’ll buy a luxurious FPGA platform... I need in fact 224KB of internal RAM to do it), and CRTC overcounts.
*'''commando.dsk''': pixels that should be deleted are not deleted (only VRAM &C000-FFFF seems used), on level 1, the moto is not displayed correctly inside the bridge... but after the bridge :/
*'''split ink demo.dsk''': (from cpcrulez) : may help about ink raster calibration.
*'''Sultan's Maze.dsk''': does need the right part of keyboard (F0-F9 are used for directions in this game)
*'''Pinball_Dreams__PREVIEW.DSK''': Does run in experimental/ versions r005.8.9.2 and r005.9.11e (experimental forked version of r005.9.11 using flag FPGAmstrad_amstrad_motherboard.vhdl.HACK_Z80=false). Does freeze in !experimental versions when background music is special (not long classic background music) and you press two buttons (left/right flipper keys) at the same time, ok in r005.8.14 (using default OSD value : MEM_WR=quick). Scrolling text is OK in r005.8.16c4 but still one garbage line at top of main game (CRTC1 offset ?)
*'''Fres Fighter II Turbo.dsk''': FDC problem, cannot be launched.
*'''Seascape.dsk''': Devilmarkus, using scandb50Hz and MEM_wr=slow, does display, but a flower petal at bottom is drawn in blue. A good raster test.
*'''Welcome To Amstrad CPC 6128.dsk''': does display "Incompatible BASIC installed" message.
'''Arkanoid.dsk''' stars use rupture address (changing address several time during display of one image), it is now supported on "candidate 001" version of FPGAmstrad. Run better in r005.9.11e than in r005.9.11.
In order to get a better external RAM performance, and getting more luck about porting my project into others FPGA platform, I do now use a "Mirror VRAM" : external is just used by Z80 read and write (no more clock sequence finally ^^'). And a write in video RAM zone (like "poke &C000,255") does just write also in another parallel RAM, a FPGA internal RAM, that I call VRAM, this VRAM can be written at a certain speed and read at another for VGA purpose (FPGA internal RAM can be used like that)
=== USB joystick Joystick ===
Before learning final platform and its embedded controlers (USB joystick with a controler, is just 7 wires : left right up down buttonX buttonY buttonZ), and after having destroyed 12 collector original joysticks during tests... I did some research about simply connecting a modern USB joystick into FPGA. It was a part of my Agile Method run, I worked about two months on it.
http://www.ulule.com/usb-paf (unfunded) => but MiST-board final platform does offer USB pro competition Joystick compatibility <3 <3 <3
==== A fork of USB Joystick by The EMARD ====
A fork of this minimalistic USB Joystick controler by The EMARD, going further :
http://github.com/emard/fpga-usbhid-host
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