Ivel Ultra

The Ivel Ultra was an 8-bit Croatian Apple II compatible computer designed by Branimir Makanec and developed by Ivasim Electronika in the 1984s.

It was produced in two different versions: the first version has a brown case and ran from 1984 to 1986, the second has a white case and ran from 1987 to 1990.

The machine was equipped with one or two 5.25" floppy disk drives. It came with an Apple I compatible BASIC language. The operating system, called IDOS, is compatible with Apple DOS 3.3.

The Ivel Ultra could be equipped with a second Zilog Z80 processor, in order to offer compatibility with the CP/M operating system.

Specifications

 * CPU: MOS Technology 6502 at 1 MHz
 * ROM: 12 KB (BASIC language interpreter and machine language monitor)
 * RAM: 64 KB
 * Graphic mode: 280 x 192 pixels, 6 colors
 * Text mode: 40 x 24
 * Operating system: IDOS, compatible with Apple DOS 3.3, CP/M (with an added Z80 CPU)