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Author Topic: I need help with VMMaker and xm-2950 monitor.  (Read 1669 times)

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moundy

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I need help with VMMaker and xm-2950 monitor.
« on: November 03, 2011, 07:10:21 pm »
    I need help with the proper config settings for VMMaker and my xm-2950 monitor. The monitor specs are: Auto Scan from
                                H: 15.5 to 50.5 kHz
                                V: 40 to 120 Hz
                             Resolution : 640x480 to 1024x768 @60Hz
                                              Video 600 horzontal lines
                                              RGB Horizontal: 800 lines/vertical: 600 lines
                             Retrace time : Horizontal: 4.2 usec
                                                 Vertical: 0.55 msec

I'm not sure about the porch values or the hsync and the vsync I'm guessing that is the retrace time?

This is a copy of a section of the VMMaker config :



; 2. MONITOR
; ----------

; Monitor Type. Valid types: D9800, D9400, D9200, EGA, VGA, MULTI, H9110, PAL, NTSC, GENERIC, CUSTOM

   MonitorType = "GENERIC"


; Monitor CUSTOM. These values will be used if MonitorType = "CUSTOM"
;
; monitor_specs_0-6 = "HfreqMin-HfreqMax, VfreqMin,VfreqMax, HFrontPorch, HSyncPulse, HBackPorch, VfrontPorch, VSyncPulse, VBackPorch, HSyncPol, VSyncPol, ActiveLinesLimit, VirtualLinesLimit"
;
;    * HfreqMin-HfreqMax: Minimum and maximum horizontal frequency, in Hz. Defines the range of horizontal frequencies the monitor is capable to sync.
;       The higher the horizontal frequency, the higher the vertical resolution available for the same vertical refresh.
;       The higher the horizontal frequency, the higher the vertical refresh available for the same vertical resolution.
;       The higher the horizontal frequency, the lower the horizontal amplitude of active video (narrower picture).
;
;   * VFreqMin-VfreqMax: Minimum and maximum vertical frequency, in Hz, Defines the range of vertical frequencies the monitor is capable to sync.
;
;   * HFrontPorch, HSyncPulse, HBackPorch: Horizontal timing and geometry, values in Ás
;
;   * VfrontPorch, VSyncPulse, VBackPorch: Vertical timing and geometry, values in ms
;
;   * HSyncPol,VSyncPol: polarities, not in use! defaults to negative.
;
;   * ActiveLinesLimit: Vertical resolutions until ActiveLinesLimit value included, are generated as progressive, regardless the possibility
;                           of obtaining the required vertical refresh value.
;
;   * VirtualLinesLimit: Vertical resolutions above ActiveLinesLimit and below VirtualLinesLimit are virtualized, that is, an interlaced resolution
;                            bigger that the native one is generated, with the right refresh, and "hardware stretch" is applied.
;                            Vertical resolutions above VirtulaLinesLimit are generated as interlaced, without any stretching.

   monitor_specs_0 = "15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 288, 448"


; Tolerance for horizontal frequency, in kHz, enables extending the range defined by [ HfreqMin, HfreqMax ]
; The resulting allowed frequency range will be [ HfreqMin - HfreqTolerance, HfreqMax + HfreqTolerance ]

   HfreqTolerance = 0.010

--------------------------------------------------------------------------------

Calamity

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Re: I need help with VMMaker and xm-2950 monitor.
« Reply #1 on: November 04, 2011, 09:03:31 am »
Quote
                             Retrace time : Horizontal: 4.2 usec
                                                 Vertical: 0.55 msec

I'm not sure about the porch values or the hsync and the vsync I'm guessing that is the retrace time?

The retrace time there could mean the actual length of the sync pulse itself (vertical and horizontal) excluding porch values, we can't be sure. If that's the case you'd need to figure out the right porch values that fit your monitor.

Anyway, I'd try with the D9800 settings as they seem to keep within your monitor ranges (always be careful).
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moundy

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Re: I need help with VMMaker and xm-2950 monitor.
« Reply #2 on: November 04, 2011, 12:50:07 pm »
Thanks for your reply.  I tried what you said and it works perfectly . 120 modelines. Curious, if I wanted to make other modelines is 120 the max number of modelines allowed by your driver ?  If it is , how do I delete/replace some of the modelines ? Thanks again for your help and your driver is working perfectly for me so far.