Active Threads Since Yesterday

Active Threads | Active Posts | Unanswered Today | Since Yesterday | This Week

04/21/19 09:41 AM

Re: 8bit Apples - Apple I, II, /// and the 16 bit GS [by Golden Child]

I wanted to see if I could control the ioports for the joystick and after much fiddling and adding some code to luaengine and ioports.h and ioports.cpp I think I've got it.

Yes, it's a bit of a hack, but it's pretty useful to be able to precisely control an anlog input.

So now I can draw spirals with the graphics tablet:

Code

function spiral()
for i=16384,16384+8192-1 do manager:machine().devices[":maincpu"].spaces["program"]:write_u8(i,0) end
for i=0,256*16,1 do 
x=math.cos(i/256.0*math.pi*2.0)*i/256.0*8.0*1024
y=math.sin(i/256.0*math.pi*2.0)*i/256.0*8.0*1024
ioports=manager:machine():ioport().ports ioports[":sl2:agraphtablet:joystick_3_x"].fields["P3 Joystick X"].live:set_analog_value(math.floor(x),math.floor(x),0)
ioports=manager:machine():ioport().ports ioports[":sl2:agraphtablet:joystick_3_y"].fields["P3 Joystick Y"].live:set_analog_value(math.floor(y),math.floor(y),0)
print (i,x,y,ioports[":sl2:agraphtablet:joystick_3_x"]:read(),ioports[":sl2:agraphtablet:joystick_3_y"]:read())
emu.wait(1/60+.001) 
print (i,x,y,ioports[":sl2:agraphtablet:joystick_3_x"]:read(),ioports[":sl2:agraphtablet:joystick_3_y"]:read())
end 
end
co1=coroutine.create(spiral) ok,err=coroutine.resume(co1) print(ok,err)

I wrote a function set_analog_value that just stuffs values into m_accum and m_previousvalue for the live ioport analog member. m_previousanalog doesn't seem to have any effect.

Code

       // live analog value tracking
        s32                 m_accum;                // accumulated value (including relative adjustments)
        s32                 m_previous;             // previous adjusted value
        s32                 m_previousanalog;       // previous analog value

In ioport.h

Code

struct ioport_field_live
{
        // construction/destruction
        ioport_field_live(ioport_field &field, analog_field *analog);

        void set_value(ioport_value newvalue) {value = newvalue;};
        void set_analog_value(s32 newaccumvalue, s32 newpreviousvalue, s32 newpreviousanalogvalue);

In ioport.cpp

Code

void ioport_field_live::set_analog_value(s32 newaccumvalue, s32 newpreviousvalue, s32 newpreviousanalogvalue)
   {analog->set_accum(newaccumvalue); analog->set_previous(newpreviousvalue); analog->set_previousanalog(newpreviousanalogvalue);}

Just added set_accum, set_previous and set_previousanalog to class analog field:

Code

// ======================> analog_field

// live analog field information
class analog_field
{
        friend class simple_list<analog_field>;
        friend class ioport_manager;
        friend void ioport_field::set_user_settings(const ioport_field::user_settings &settings);

public:
        // construction/destruction
        analog_field(ioport_field &field);

        // getters
        analog_field *next() const { return m_next; }
        ioport_manager &manager() const { return m_field.manager(); }
        ioport_field &field() const { return m_field; }
        s32 sensitivity() const { return m_sensitivity; }
        bool reverse() const { return m_reverse; }
        s32 delta() const { return m_delta; }
        s32 centerdelta() const { return m_centerdelta; }

        // readers
        void read(ioport_value &value);
        float crosshair_read();
        void frame_update(running_machine &machine);

        void set_accum(s32 newvalue){m_accum=newvalue;};
        void set_previous(s32 newvalue){m_previous=newvalue;};
        void set_previousanalog(s32 newvalue){m_previousanalog=newvalue;};

In luaengine.cpp

Code

/* field.live
 */

	sol().registry().new_usertype<ioport_field_live>("ioport_field_live", "new", sol::no_constructor,
                        "set_value", &ioport_field_live::set_value,
                        "set_analog_value", &ioport_field_live::set_analog_value,		
			"name", &ioport_field_live::name,
                        "value", &ioport_field_live::value);

It kinda looks like a fingerprint.

[Linked Image]

329 48,956 Read More

MAME

04/21/19 08:22 AM

Re: Hanimex Pencil 2 - vdp interrupts [by Robbbert]

It looks like a ROM. Are you in a position to dump it?

42 1,578 Read More

QMC2

04/20/19 11:36 PM

Re: What's up with QMC2? [by couriersud]

René, good to hear that your health is improving. Top priority should be to care for yourself now and to be patient.
Sounds helpless and boring and certainly it is. I had to pause MAME development for a long time to support my wife. Still fighting but when things calmed down I was able to return. Take your time and fight. All the best.

3 281 Read More

MAME

04/20/19 02:39 PM

Re: Difficulty keeping bgfx framerate at 100% [by R. Belmont]

BGFX on Windows will generally use D3D11 by default, which may be part of the difference. (It's why BGFX works on a clean Win10 install when default MAME will just die).

4 161 Read More

MAME

04/19/19 10:45 PM

Re: TMS-09xx/1xxx thread (was New Dumps) [by hal3000]

Cool, this is a snap of the PCB showing the traces:
[Linked Image]

Let me know if there is anything else you need from the game

3,121 1,933,858 Read More

MAME

04/19/19 07:51 PM

Re: ex- USSR and Soviet Bloc hardware [by shattered]

From the "why not" department:

PS/2-mode floppy controllers have a RDDATA bit in the SRB status register, which essentially samples flux transitions incoming from the drive (each transition toggles the flip-flop and its output is the RDDATA).

"MX:" is the format used by floppy controller on Soviet PDP-11 compatible desktops (the DVK series). Low level encoding is FM, and track format is not compatible with IBM 3740 -- http://torlus.com/floppy/forum/viewtopic.php?f=19&t=1384

MXONPC (http://pdp-11.ru/mybk/pdp11/DRV/MXONPC.RAR) is a DOS program written by Vladimir Poletaev in 1997 to recover data from such floppies on a Pentium-class PC. And with a bit of hacking, it works in MAME (at least some of the time):

[Linked Image]

PR coming soon.

354 290,487 Read More