LOEWE ALPHA-2 » History » Revision 2
Revision 1 (laforge, 10/05/2022 04:03 PM) → Revision 2/4 (laforge, 10/05/2022 04:04 PM)
h1. LOEWE ALPHA-2 The LOEWE ALPHA-2 is a BTX Decoder card (full-length 8-bit ISA) for use in IBM or comptabile PCs. It appears to date to 1988. Contrary to the later common Software BTX decoders, the ALPHA-2 is a hardware decoder, utilizing the "ITT LOTTI" decoder ASIC. It supports three different modes of operation: * _CEPT-1_ where the decoded CEPT video signal is inserted/looped into the video signal of the PC graphics card, i.e. the ALPHA-2 is situated between CGA/MGA card and the (single) Monitor * _CEPT-2_ where the decoded CEPT video signal is displayed on a second monitor, independent from the primary monitor of the PC * _ASCII_ where the decoded CEPT is converted/reduced to normal ASCII characters which can be shown on the normal PC screen using its regular text display h2. Hardware h3. EPROM images attachment:LOEWE_ALPHA2_TMS27C512.bin attachment:LOEWE_TWM01_TELEFON_WAHLMODUL_D8751H.bin h2. Manual attachment:loewe-pc-btx-alpha-handbuch.pdf