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Kale Offline OP
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Implemented preliminary DMAC support, allows Tokyo Nanpa Street to be working (if you know JP, but that's another story).



As a side effect this also fixes the PC-8001 text compatibility mode (N-BASIC), even though screen settings are pretty much busted by now.



fwiw my current docs are very poor on this field, DMAC has 4 address registers, 4 counter registers and a mode register. Basically I just know that the address register should be used as a text vram base and that bit 2 is needed for enabling the transfer, nothing else.

Coming up: fix up text attributes.

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Kale Offline OP
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"I feel like a liar" progress:

Implemented high VRAM bankswitch, and fixed a DIP-SW bug.
Allows Grobda to show this screen, needs extra VRAM support for making it to enter into gameplay.


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Nice work! smile

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Nice Work Kale

See mappy is playable


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Nice job! Btw, there is a proper Intel 8214 emulation in src/mess/machine/i8214.c

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The Japanese at the bottom of the Tokyo Nampa Street title screen is the standard "This is a work of fiction. All names..." disclaimer, followed by a warning that the phone numbers that appear in the game are passwords to save and recover your progress and you shouldn't dial them on your actual phone.

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Kale Offline OP
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Originally Posted By Curt Coder
Nice job! Btw, there is a proper Intel 8214 emulation in src/mess/machine/i8214.c


Yeah, I've tried to hook it up without any success. Could you please take a look at it? smile

And good, Mappy uses the OPN joystick port, guess that I'll hook it up soon.

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Kale Offline OP
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Fixed a window offset bank init bug, should be 0x80 and not 0x00, this makes at least The Goonies and Alpha to boot fine, Arkanoid is fixed too but needs some additional bankswitch features kicked in.








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Great work, Kale smile

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Formula C.M.S

The FM/PCM sound is not bad. smile



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