One chip MSX improvement project

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By doctorxyz

Supporter (7)

doctorxyz's picture

04-05-2017, 22:47

I would like to suggest the following feature: A RGB-YPbPr converter (maybe on th9958 core), enabled/disabled by some Keyboard button combo. There is a link with the related code, I hope this helps: https://www.mathworks.com/examples/matlab-hdl-coder/mw/hdlco...

By caro

Champion (480)

caro's picture

02-04-2018, 17:44

Updating OCM based on DevBoards:
1) The system boot loader has been modified - the boot process is displayed on the screen.
2) In addition to the initial start to power on and by pressing the KEY0 button, during which the system BIOS boots up,
there is a "warm" start without loading the BIOS on the KEY1 button and from the keyboard, by simultaneously pressing Ctrl + Alt + DEL.
3) I tried to implement the so-called "ScanLine" mode - for inclusion, in any VIDEO mode it is necessary to press SHIFT + PrtScr.
http://caro.su

By Fabf

Master (218)

Fabf's picture

02-04-2018, 20:57

Hi Caro
I can't open DE0-nano project with Quartus 13.0.1
I have this error :

Error (125048): Error reading Quartus II Settings File C:/Users/Fabf/Desktop/de0n_src_180402/emsx_top.qsf, line 330
	Info (125063): set_global_assignment -name ENABLE_CONFIGURATION_PINS OFF
Error (125048): Error reading Quartus II Settings File C:/Users/Fabf/Desktop/de0n_src_180402/emsx_top.qsf, line 331
	Info (125063): set_global_assignment -name ENABLE_BOOT_SEL_PIN OFF

By caro

Champion (480)

caro's picture

02-04-2018, 22:34

I'm using version 14.1 of Quartus II (64-bit), which was bundled with devkit DE0nano

By caro

Champion (480)

caro's picture

19-04-2018, 05:44

By erpirao

Paladin (789)

erpirao's picture

11-05-2018, 20:32

I have a doubt in the zemmix / ocm / de1:
is the turbo-VDP still active?
I remember at the time, this table of HRA!
OCM (3.58 MHz mode, normal VDP) -------------------------
YMMM = 19797
HMMM = 19718
HMMV = 8237
LMMM = 14792
TOTAL PROC TIME = 62544

FS-A1ST (R800) -------------------------------------------- -----
YMMM = 16211
HMMM = 18961
HMMV =
7809 LMMM = 13541
TOTAL PROC TIME = 56522

OCM (3.58 MHz mode, VDP Turbo) ---------------------------
YMMM = 3596
HMMM = 3580
HMMV = 1267
LMMM = 3261
TOTAL PROC TIME = 11704

Hmm ..
The difference in speed seems to have the difference in each command.
but those who have the Zemmix tell me that you do not notice that much difference.

By gaula82

Rookie (19)

gaula82's picture

14-05-2018, 14:20

@caro, long time DE1 MSX user here thanks to your fantastic work!
I have a petition some questions:
1) Could you please make VGA scanlines configurable via dip switches on the DE1? Or at least could you tell me how to modify the sources so VGA scanlines are ON by default?
2) The new MGLOCM.COM command does not work on current DE1 core. It is a very useful command to load ROMs! Could you update sources with latest KDL version so it works, please?
3) I have an spanish keyboard. How can I configure the core to use the right layout, please?

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