Microspace MSMVGA, Technical User'S Manual

Page: 9 / 19

DIGITAL-LOGIC AG
MSMVGA Manual V1.0
9
Supported VGA Modes
Mode: Type: Colors: CRT: Text: Graphic: DRAM: Monitor: Refresh/HR:
0,1 Text 16 ABC 40 x 25 320 x 200 256k CGA 70 Hz
2,3 Text 16 ABC 80 x 25 640 x 200 256k CGA 70 Hz
4,5 Graphic 4 ABC 40 x 25 320 x 200 256k CGA 70 Hz
6 Graphic 2 ABC 80 x 25 640 x 200 256k CGA 70 Hz
7+ Text Mono ABC 80 x 25 720 x 350 256k HGC 70 Hz
D Planar 16 ABC 40 x 25 320 x 200 256k CGA 70 Hz
E Planar 16 ABC 80 x 25 640 x 200 256k CGA 70 Hz
F Planar Mono ABC 80 x 25 640 x 350 256k EGA 70 Hz
10 Planar 16 ABC 80 x 25 640 x 350 256k EGA 70 Hz
11 Planar 2 ABC 80 x 30 640 x 480 256k VGA 60 Hz
12/12+ Planar 16 ABC/BC 80 x 30 640 x 480 256k VGA 60 Hz/72Hz
13 Planar 256 ABC 40 x 25 320 x 200 256k CGA 70 Hz (not 8 Bit Bus)
20 4 Bit Lin 16 ABC 80 x 30 640 x 480 512k VGA 60 Hz
22 4 Bit Lin 16 BC 100 x 37 800 x 600 512k SVGA 60 Hz
30 8 Bit Lin 256 ABC 80 x 30 640 x 480 512k VGA 60 Hz/72 Hz
32 8 Bit Lin 256 BC 100 x 37 800 x 600 512k SVGA 60 Hz/72 Hz
60 Text 16 ABC 132 x 25 1056 x 400 256k MGA 68 Hz
61 Text 16 ABC 132 x 50 1056 x 400 256k MGA 68 Hz
72 Planar 16 C 128 x 48 1024 x 768 512k HVGA 60 Hz
79 Packed 256 ABC 80 x 30 640 x 480 512k VGA 72 Hz
7C Packed 256 BC 100 x 37 800 x 600 512k SVGA 72 Hz
supported on MSM486DX boards version 4.0 with 1Mbyte videoram.
24 4 Bit Lin 16 C 128 x 48 1024 x 768 1024k HiVGA 60 Hz
26 4 Bit Lin 16 BC 128 x 48 1024 x 768 1024k HiVGA 43 Hz
34 8 Bit Lin 256 C 128 x 48 1024 x 768 1024k HiVGA 60 Hz
36 8 Bit Lin 256 BC 128 x 48 1024 x 768 1024k HiVGA 43 Hz
40 15 Bit Lin 32k ABC 80 x 30 640 x 480 1024k VGA 60 Hz
41 16 Bit Lin 64k ABC 80 x 30 640 x 480 1024k VGA 60 Hz
7E Packed 256 C 128 x 48 1024 x 768 1024k HiVGA 60 Hz
A = PS/2 fixed frequency analog monitor;
B = Multifrequency CRT monitor like NEC Multisynch 3D or eq.
C = Nanao/EIZO 9070, NEC Multisynch 5D, or eq.
Simultaneous Flatpanel / CRT Display
The 65540/45 provides simultaneous display operation with Multi-Sync variable frequency or PS/2
fixed frequency CRT monitors and single panel-single drive LCDs (LCD-SS), dual panel-single drive
LCDs (LCD-DS), dual panel-dual drive LCDs (LCD-DD) and plasma and EL panels (which contains
single panel-single drive interfaces). Single drive panels sequence data in the same manner as CRTs
so the 65540/45 provides simultaneous display with CRTs and LCD-SS, LCD-DS, plasma or EL
panels by driving the panels with CRT timing. No external hardware is required. In contrast, LCD-DD
panels require video data alternating between separate locations in the memory. In addition, a dual-
drive panel requires data from both locations simultaneously. The 65540/45 also provides
simultaneous display with LCD-DD and CRT monitors without using external VRAMs.
The internal VRAM frame buffers offer significant advantages relative to competitors' DRAM frame
buffers. A DRAM frame accelerator requires that the flatpanel is refreshed at double of the CRTs
vertical refresh rate. Therefore, an expensive 6.3 MHz LCD (with 120 Hz panel vertical refresh rate) is
required for simultaneous display with 60 Hz CRT monitors when a DRAM frame buffer is used. Due
to its higher bandwidth relative to DRAMS, a VRAM frame buffer can refresh both the flatpanel and
CRT at the same vertical refresh rate. Therefore, inexpensive 3 MHz and 6 MHz LCDs (in addition to
6.3 MHz LCDs) can be used for simultaneous display with 60 Hz and 72 Hz CRT monitors when a
VRAM frame buffer is used.