VAM R4.4 and WYSIWYG.

"VAM 4.4 introduces support for CTOS graphics on EISA/ISA/PCI workstations with industry standard VGA controllers. Using graphics, VAM 4.4 provides new capabilities to emulate CTOS color and character attributes for EISA/ISA/PCI workstations that do not have a CTOS Video Card installed.

In graphics mode, VAM 4.4 also adds support for the full range of traditional CTOS character map sizes: 80x29, 132x29, 80x34, 132x34, 80x38 and 146x38."

- Unisys CTOS Video Access Method R4.4 SRA.

With the newer Supergen machines, Unisys had a problem. The CTOS Video card would only work with machines with 12MB or less of memory. Customers wanted to use more than the standard 8MB in their CTOS workstations.

The other problem Unisys had was availability of the Weitek 5x86 video chips. These chips were used in the CTOS Videocard, and were coming to the end of the production life. How was Unisys going to solve these problems?

VAM R4.4 was the answer!

VAM R4.4 emulates Bit Mapped graphics on the following systems:
SG1600, SG1650, SG2400, SG2500, SG2600, SG2601, SG3400, SG3500, SGS4200, SGS4250.

VAM R4.4 does all this by emulating hardware in software. Display performance, I thought, was somewhat so. A "Page Next" was more like a slow scroll.

Disclaimer
This article is provided as is without any express or implied warranties. While every effort has been taken to ensure accuracy of the information contained in this article, the author assumes no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein.

Dale 'Cat' Robinson - catfromdarwin@geocities.com
15 July 1999

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