One chip MSX improvement project

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Par vanfanel

Champion (446)

Portrait de vanfanel

20-04-2010, 14:15

@KdL: Is the latest version (2.3 with date 2010.04.13 ) compatible with the Altera DE1? Or must it be adapted to work in that board?

Par KdL

Paragon (1450)

Portrait de KdL

21-04-2010, 04:02

@vanfanel: I'm sorry, I don't have a DE1.

This is a 1st step for next updates and it is intended/tested with original 1chipMSX only.
The firmware is MSX2 again but my todo list is open. Wink

Par caro

Hero (513)

Portrait de caro

21-04-2010, 10:33

Is the latest version (2.3 with date 2010.04.13 ) compatible with the Altera DE1?Is not compatible.
Or must it be adapted to work in that board?Yes.

Par vanfanel

Champion (446)

Portrait de vanfanel

22-04-2010, 10:42

And..ehm... are you adapting it, Caro? Pretty please Big smile

Par caro

Hero (513)

Portrait de caro

22-04-2010, 16:24

And..ehm... are you adapting it, Caro? Pretty please Big smile
Last version firmware for DE1 seems to me on much more advanced.

Par erpirao

Paragon (1309)

Portrait de erpirao

22-04-2010, 16:54

link of last DE1 firmware, please????

Par caro

Hero (513)

Portrait de caro

22-04-2010, 18:05

link of last DE1 firmware, please????Version OCM MSX2+ for Altera DE1 of June 15, 2008.

1) Use design !HRA for VDP9958 from its stable version for OCM
May 11, 2008.

2) Changed the timing parameters of the system.
Instead, the base frequency 27 MHz, 50 MHz frequency is used.
As a result, the global frequency OCM_DE1 became equal
50 * 3 / 7 = 21.43MHz, and not 20.925 (for OCM = 21.477MHz)

3) change the parameters Audio Codec. Timing is made from 27MHz.
Beat Raith increased to 98 kHz, for better playback
sound of OPLL-synthesizer, whose basic frequency
sound slots = 49 kHz.

4) Disable volume control separate sound synthesizers.
It remains only to regulate the total volume (PgUp, PgDn).

The latest stable version of the firmware for the MSX2 + OCM to DE1 with sources:
http://www.caro.k66.ru/files/08_06_15.zip
File ROMS MSX2 + to record on SD-card:
http://www.caro.k66.ru/files/roms_m2p.zip
Wiring slots and joysticks for OCM in DE1:
http://www.caro.k66.ru/graf/ocm_de1.png

Kamil Karimov (caro)
k2k@list.ru

Par vanfanel

Champion (446)

Portrait de vanfanel

22-04-2010, 18:22

Have you tried Microcabin games with the last DE1 version? (Xak series, Fray)
I've been trying them and I can't get them working. Did someone succeed on this?

Par caro

Hero (513)

Portrait de caro

22-04-2010, 18:29

Have you tried Microcabin games with the last DE1 version? (Xak series, Fray)
I've been trying them and I can't get them working. Did someone succeed on this?

Are there any problems with these games on OCM?

Par vanfanel

Champion (446)

Portrait de vanfanel

22-04-2010, 20:36

@caro: yes, there are problems. They don't play any FM music at all. They are totally silent.

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