X-Pert Computer Services / Viona Development Visiona

Manufacturer X-Pert Computer Services / Viona Development, Germany	Date 1990	Amiga A2000, A3000, A4000	Interface Zorro II	Autoconfig ID 2117 / 1,2

Manufacturer

Date

1990

Amiga

A2000, A3000, A4000

Interface

Zorro II

Autoconfig ID

2117 / 1,2

RTG graphics card

Inmos IMS G300C (85, 110 or 135 MHz) programmable RAMDAC and sync generator
no blitter, line drawing engine, or other general purpose graphics processing capability
Visiona Paint: 2 MB 20 ns VRAM in 16 ZIP sockets
Visiona Paint+: 4 MB 20 ns VRAM in 32 ZIP sockets

screen modes

maximum resolution is only limited by the amount of VRAM installed
24/32 bit: up to 1024×1024
8 bit: up to 2048×2048
2 bit: up to 4096×4096
1 bit: up to 8192×4096
the resolutions above need 4 MB VRAM - with 2 MB VRAM, the maximum resolution is limited
maximum horizontal frequency: 80 kHz
resolutions above 1600×1280 flicker badly

notes

Visiona Paint can be converted to a Visiona Paint+ by adding 16 RAM chips and a new control PAL
the VRAM uses 2 resp. 4 MB in the Zorro II address space:
- limits Zorro II RAM expansions to 6 resp. 4 MB
- the VRAM can be used by the Amiga as memory expansion using Addmem program (Visiona library must not be activated)
- content of the Video RAM can be changed by the CPU and the Video Controller (which accesses the Video RAM with a DMA controller)
two separate oscillators for PAL and NTSC signals - two additional sockets for eg. SECAM
15 pin VGA connector
five HF-PCB connectors
supports several Sync options:
- output: separate H-Sync/V-Sync, Composite Sync on H-Sync, Sync-on-Green
- input: external synchronization (on H-Sync) with a TBC possible (needs small hardware expansion)
EGS driver
the Visiona, the GVP EGS-110/24 and EGS-28/24 Spectrum were all designed by Hendrik Horak

DIP switch settings