Quote:

Yes, also take into consideration this link about vdp command speed..... http://map.tni.nl/articles/vdp_commands_speed.php check the tables they are accurate...

I wrote a blog post about comparing the measurements on the 1CM right after it came out. You can find it here:

http://www.grauw.nl/blog/entry/392

I should re-do the tests with the latest PLD .

Does anybody have an idea how I can get one to the Netherlands? Ordering is impossible because of my lack of knowledge on japanese.

Quote:

http://www.msx.d4e.co.jp/ It is a chance to get 1chipMSX It seems that a blog site called ProjectMSX starts on June 6. It is written that 1chipMSX information is also carried. There may be some progress by official

Quote:

Does anybody have an idea how I can get one to the Netherlands? Ordering is impossible because of my lack of knowledge on japanese. Quote: http://www.msx.d4e.co.jp/ It is a chance to get 1chipMSX It seems that a blog site called ProjectMSX starts on June 6. It is written that 1chipMSX information is also carried. There may be some progress by official

You can ask Ronnie Klok (rklok), he imported many at a reasonable price.

http://www.msx.d4e.co.jp/1chipmsx.html

To hurry will be better if you buy it.
The inventory clearance sale(25%off) of the last 250 sets is carried out.

The problem is I can't read japanese and i have no idea to order it and whether they can ship it to The Netherlands.

Quote:

http://www.msx.d4e.co.jp/1chipmsx.html To hurry will be better if you buy it. The inventory clearance sale(25%off) of the last 250 sets is carried out.

I am short of the old cash at the moment, I am thinking of selling my OCM, even perhaps my TurboR GT, Sunrise CF, and other MSX bits I have, watch this space.

I'm very interested to buy one for 85 euros... but..... no shipping to NL...

If I could choose how to build the new One-Chip-MSX, I'd love to make this thing...

A-hem... I'm presenting you my personal vision of the new step in the MSX Evolution



If I could command the MSX Corporation I would purchased a stock of these popular ultra-low-cost-and-small-laptops (that one in the picture is a MSI Wind) with a built-in 8,9" lcd screen and the size of a sheet of paper; then I would package them with a custom version of Linux ( I'd like to call it MSXOs ) that would natively run all the MSX1/2/2+ ROM Images/Disks/Tapes available, and would act as a modern computer, with the ability of surfing the net with Firefox, reading the e-mails with Thunderbird, and writing documents with OpenOffice.

For a price of 299 Euro the people could use it as a normal laptop for work and leisure, AND the could use it as a brand new MSX computer
( And... yes, you could use it for playing Zanac while sitting on the toilet )

Hi,
I'm trying to compile the latest release (emsx_top_dev_20080606) for the Altera DE1 board.
I'm using Quartus Web Edition 7.2sp3.
I get the following error :

Error (10028): Can't resolve multiple constant drivers for net "DBO[0]" at EMSX_TOP.VHD(1561)
(Same thing on DBO[1] through DBO[7], and it points to the PSG instance).
I checked against the source, and I don't understand why I get this error, provided that DBO is used as an input to the PSG unit (and I didn't see any construct that would dual-source this signal).

Any idea ?

Sorry,
The file to archive was mistaken.
The right file was uploaded.

http://www5d.biglobe.ne.jp/~hra/note/onechipmsx/files/emsx_top_dev_20080712.zip

Thanks, it's better now.
However, once programmed, here is what I get : the CPU seems to run some code, then is stuck at reset address $0038 (according to the 7 segments display).
It seems that at the beginning it tries to access the SD card (one green led blinks briefly). The VGA monitor displays some color stripes (looks like a video test).
I guess it looks for a ROM image, so I tried to put a MSX bios file on a blank formatted SD card (in FAT or FAT32), but it doesn't change anything.
What am I doing wrong ? Sorry for being such a noob :/

Quote:

Thanks, it's better now. However, once programmed, here is what I get : the CPU seems to run some code, then is stuck at reset address $0038 (according to the 7 segments display). It seems that at the beginning it tries to access the SD card (one green led blinks briefly). The VGA monitor displays some color stripes (looks like a video test). I guess it looks for a ROM image, so I tried to put a MSX bios file on a blank formatted SD card (in FAT or FAT32), but it doesn't change anything. What am I doing wrong ? Sorry for being such a noob :/

Got the same DE1, and the same problem.

With version the current PLD the bootscreen shows 2 messages :

128kb VRAM
O C M

Is it possible to replace the O C M part by a message how much RAM is
configured ?

Just like a real MSX, this way you can see how much RAM is configured
and/or if your mapper is pressent and working.

Also, maybee it's nice to have a feature that show's what versions op the PLD is running

Since a emsx_top_dev version is a version during development, some experiment circuits are embedded.

(1) DE1 version will not be started if there is no SD card containing BIOS.
(2) SD card supports only FAT16.
(3)　The experiment circuit is contained in "fpga_design/src/altera_de1_board/EMSX_TOP.VHD".

line#1243
--------------------------------------------------------------------------------
IF( CLK21M'EVENT AND CLK21M = '1' )THEN
CASE( DISPMODE + FF_DISP_SEL )IS
WHEN "00" => -- TV 15KHZ
-- PDAC_VR <= VIDEOC;
-- PDAC_VG <= VIDEOY;
-- PDAC_VB <= VIDEOV;
-- RESO_V <= '0'; -- HSYNC:15KHZ
-- PVIDEOHS_N <= VIDEOHS_N;
-- PVIDEOVS_N <= VIDEOVS_N;

PDAC_VR <= TEST_R;
PDAC_VG <= TEST_G;
PDAC_VB <= TEST_B;
RESO_V <= '1';
PVIDEOHS_N <= TEST_HS;
PVIDEOVS_N <= TEST_VS;

WHEN "01" => -- RGB 15KHZ (HALF AMPLITUDE)
PDAC_VR <= '0' & VIDEOR( 5 DOWNTO 1 );
PDAC_VG <= '0' & VIDEOG( 5 DOWNTO 1 );
PDAC_VB <= '0' & VIDEOB( 5 DOWNTO 1 );
-- RESO_V <= '0'; -- HSYNC:15KHZ
-- PVIDEOHS_N <= VIDEOCS_N;
-- PVIDEOVS_N <= DACOUT; -- AUDIO
RESO_V <= '1'; -- HSYNC:31KHZ
PVIDEOHS_N <= TEST_HS;
PVIDEOVS_N <= TEST_VS;
--------------------------------------------------------------------------------

An experiment circuit will be lost if it corrects as follows.
--------------------------------------------------------------------------------
IF( CLK21M'EVENT AND CLK21M = '1' )THEN
CASE( DISPMODE + FF_DISP_SEL )IS
WHEN "00" => -- TV 15KHZ
PDAC_VR <= VIDEOC;
PDAC_VG <= VIDEOY;
PDAC_VB <= VIDEOV;
RESO_V <= '0'; -- HSYNC:15KHZ
PVIDEOHS_N <= VIDEOHS_N;
PVIDEOVS_N <= VIDEOVS_N;

-- PDAC_VR <= TEST_R;
-- PDAC_VG <= TEST_G;
-- PDAC_VB <= TEST_B;
-- RESO_V <= '1';
-- PVIDEOHS_N <= TEST_HS;
-- PVIDEOVS_N <= TEST_VS;

WHEN "01" => -- RGB 15KHZ (HALF AMPLITUDE)
PDAC_VR <= '0' & VIDEOR( 5 DOWNTO 1 );
PDAC_VG <= '0' & VIDEOG( 5 DOWNTO 1 );
PDAC_VB <= '0' & VIDEOB( 5 DOWNTO 1 );
RESO_V <= '0'; -- HSYNC:15KHZ
PVIDEOHS_N <= VIDEOCS_N;
PVIDEOVS_N <= DACOUT; -- AUDIO
-- RESO_V <= '1'; -- HSYNC:31KHZ
-- PVIDEOHS_N <= TEST_HS;
-- PVIDEOVS_N <= TEST_VS;
--------------------------------------------------------------------------------

On a real MSX2 there is no RAM count. It is only done on MSX2+ and Turbo-R computers. IIRC someone prepared modified MSX2 BIOS that did the trick, but they were not the original MSX2 BIOS. If you want to change it, just use the SET PROMPT command (am I right?)