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Article #230

How to force AGP 2x on VIA MVP3 super 7

#230
From: Jimbo
Date: Sat, 19 Feb 2000 00:00
199 lines
9061 bytes
B.T.W. my hardware definitely supports 2x on mobo + card as specs. say so
and it did until reinstall of WinDOZE 95 B

How do you do it?  I was told to set the registry path:

HKEY_CURRENT_CONFIG\Display\Fonts\Settings\AGP to '2X'

However, it was already 2X but SANDRA reports the AGP to be 1x with sideband
enabled (VIA AGP gart reinstall in turbo / normal have no effect either).

Please could someone help me as I have noticed a drop in performance on 1x

THIS IS WHAT SANDRA REPORTS:
(hardware = TMC AI5VG+ 100mhz + Diamond Stealth III S540 Xtreme)
<<< PCI & AGP Buses Information >>>
----------------------------------------------------------------------------
-------------------

<< Buses Information >>
  < PCI & AGP Buses >
    Interface Version:                    2.10
    No. Buses:                            2
    Config space access mechanism 1 suppo:Yes
    Config space access mechanism 2 suppo:No
    Cycle generation mechanism 1 support: Yes
    Cycle generation mechanism 2 support: No

<< VIA Technologies Inc VT82C597 VP3 System Controller >>
  < Device Information >
    Device Type:                          Host Processor Bridge
    Device ID:                            Device 0h on bus 1 F0
    Windows Device Name:                  VIA Tech PCI standard host CPU
Bridge
    OEM Device Name:                      VIA Technologies Inc VT82C597 VP3
System Controller
    OEM Hardware ID:                      FUN_0, VEN_1106, DEV_0597
    Revision No.:                         4 (04)

  < AGP Capabilities >
    Version:                              1.00
    Command Queue Length:                 8
    FW Transfers Support:                 No
    Over 4GB Addressing Support:          No
    Side Band Addressing Support:         Yes
    Data Transfer Modes Support:          1x

  < Device Properties >
    Latency Timer:                        16 clocks
    I/O Access:                           No
    Memory Access:                        Yes
    Bus Master Capable:                   Yes
    Special Cycle Recognition:            No
    Memory Write & Invalidate:            No
    VGA Palette Snoop:                    No
    Parity Error Response:                No
    Address/Data Stepping:                No
    System Error Line:                    No
    Fast back-to-back Transactions:       No
    Detects Parity Errors:                Yes
    Supports System Error Line:           No
    Supports Parity Line:                 No
    User Defined Format:                  No
    PCI66 Bus Support:                    No
    New Capability List:                  Yes
    Device Select Timing:                 Medium

  < Hardware Resources >
    Memory Address:                       EA000000
    Dynamic Management:                   Yes

<< VIA Technologies Inc VT82C598 MVP3 System Controller >>
  < Device Information >
    Device Type:                          PCI to PCI Bridge
    Device ID:                            Device 1h on bus 1 F0
    Windows Device Name:                  VIA Tech CPU to AGP controller
    OEM Device Name:                      VIA Technologies Inc VT82C598 MVP3
System Controller
    OEM Hardware ID:                      FUN_0, VEN_1106, DEV_8598
    Revision No.:                         0 (00)

  < Device Properties >
    I/O Access:                           Yes
    Memory Access:                        Yes
    Bus Master Capable:                   Yes
    Special Cycle Recognition:            No
    Memory Write & Invalidate:            No
    VGA Palette Snoop:                    No
    Parity Error Response:                No
    Address/Data Stepping:                No
    System Error Line:                    No
    Fast back-to-back Transactions:       No
    Detects Parity Errors:                Yes
    Supports System Error Line:           No
    Supports Parity Line:                 No
    User Defined Format:                  No
    PCI66 Bus Support:                    Yes
    New Capability List:                  No
    Device Select Timing:                 Medium

  < Bridge Settings >
    Primary Bus No.:                      1
    Secondary Bus No.:                    2
    Subordinate Bus No.:                  2

  < Hardware Resources >
    Dynamic Management:                   Yes

  < Performance Tips >
    Warning W1201:                        Early versions of hardware may
contain bugs or
                                          incompatibilities.

<< VIA Technologies Inc MVP3 ISA Bridge >>
  < Device Information >
    Device Type:                          PCI to ISA Bridge
    Device ID:                            Device 7h on bus 1 F0
    Windows Device Name:                  VIA Tech PCI standard ISA Bridge
    OEM Device Name:                      VIA Technologies Inc VT82C586/A/B
PCI to ISA Bridge
    OEM Hardware ID:                      FUN_0, VEN_1106, DEV_0586
    Revision No.:                         71 (47)

  < Device Properties >
    I/O Access:                           Yes
    Memory Access:                        Yes
    Bus Master Capable:                   Yes
    Special Cycle Recognition:            Yes
    Memory Write & Invalidate:            No
    VGA Palette Snoop:                    No
    Parity Error Response:                No
    Address/Data Stepping:                Yes
    System Error Line:                    No
    Fast back-to-back Transactions:       No
    Detects Parity Errors:                No
    Supports System Error Line:           No
    Supports Parity Line:                 No
    User Defined Format:                  No
    PCI66 Bus Support:                    No
    New Capability List:                  No
    Device Select Timing:                 Medium

  < Hardware Resources >
    Dynamic Management:                   Yes

<< Diamond Multimedia Systems Stealth III S540 >>
  < Device Information >
    Device Type:                          VGA Display Adapter
    Device ID:                            Device 0h on bus 2 F0
    Windows Device Name:                  Diamond Stealth III for Windows 95
    OEM Device Name:                      S3 Inc Savage 4
    OEM Hardware ID:                      FUN_0, VEN_5333, DEV_8A22
    Product Device Name:                  Diamond Multimedia Systems Stealth
III S540
    Product Hardware ID:                  VEN_1092, DEV_4A0B
    Revision No.:                         3 (03)

  < Power Management Capabilities >
    Version:                              1.00
    Supports Clock Slow-down:             Yes
    Supports D1 PM State:                 Yes
    Supports D2 PM State:                 Yes
    Supports PME#:                        No
    Supports PME Clock:                   No

  < AGP Capabilities >
    Version:                              2.00
    Command Queue Length:                 32
    FW Transfers Support:                 No
    Over 4GB Addressing Support:          No
    Side Band Addressing Support:         Yes
    Data Transfer Modes Support:          1x, 2x, 4x

  < Device Properties >
    Line Cache Size:                      8 bytes
    Latency Timer:                        248 clocks
    I/O Access:                           Yes
    Memory Access:                        Yes
    Bus Master Capable:                   Yes
    Special Cycle Recognition:            No
    Memory Write & Invalidate:            No
    VGA Palette Snoop:                    No
    Parity Error Response:                No
    Address/Data Stepping:                No
    System Error Line:                    No
    Fast back-to-back Transactions:       No
    Detects Parity Errors:                No
    Supports System Error Line:           No
    Supports Parity Line:                 No
    User Defined Format:                  No
    PCI66 Bus Support:                    Yes
    New Capability List:                  Yes
    Device Select Timing:                 Medium

  < Hardware Resources >
    Memory Address:                       E9000000
    Memory Address:                       E0000000
    IRQ Line:                             11
    INT Pin:                              A#
    Dynamic Management:                   Yes
Technical Details
Message-ID: <88luav$h10$1@neptunium.btinternet.com>
Path: arc1-ca.pugleaf.net!unknown!not-for-mail

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From: "Jimbo" <jonbigbottom@hotmail.com>
Subject: How to force AGP 2x on VIA MVP3 super 7
Date: 2000/02/19
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