A2DVI – Apple II Digital Video

Description

APPLE II, II+,IIe DVI HDMI Graphics Card A2DVI

This product is a digital DVI/HDMI Apple II video card. It directly produces a digital video stream from Apple II’s memory content. The signal is output via an HDMI connector, connecting the Apple II to modern displays with HDMI (or DVI) inputs. No more analog signal conversion required.

The pin on the board is for AltChr connection, supported by A2DVI firmware for switching between alternative character sets on non-US versions of Apple II (“Euro-machines”).

• Based on the PICO controller board.
• Provides a DVI video stream via an HDMI connector.
• Low power/heat dissipation: less than 70mA@5V = 0.35W in operation.
• Uses 4x 74LV245 bus transceivers for 5V/3.3V signal conversion of the Apple II bus.
• Separate ALTCHR input pin for dual-language support: The pin needs to be wired separately to the “language switch” of Euro-Apple IIs (optional).

There are configuration utility disks

• based on ProDOS (requires a //e with 48K RAM or more).

• based on DOS3.3 (any Apple II).

These support the configuration of the card and also uploading custom fonts (video ROMs).

Download the files and transfer them to a disk, for example, using ADTPro.

Alternatively, you can type the program and save it to a disk manually. The menu is implemented inside the A2DVI firmware, so it takes just a couple of lines to activate it.

This is just how you would have done it back in the 80s when manually copying and typing program listings from magazines was common… 🙂

10 HOME : PRINT "ENTER A2DVI SLOT (1-7): ";
20 GET S
30 IF (S<1) OR (S>7) THEN GOTO 20
40 PRINT "LOOK AT YOUR A2DVI SCREEN!"
50 VTAB 21
60 S = -16256 + S*16
70 POKE S+15,11
80 POKE S+15,22
90 POKE S+9,0
100 GET A$
110 C = ASC(A$)
120 POKE S+9,C
130 IF C <> 27 THEN GOTO 100
140 POKE S+15,0
150 HOME : PRINT "GOODBYE!"

Firmware Documentation