The HP-85A was Hewlett Packard's first Series 80 microcomputer, introduced about
1979. It had a keyboard, a dual alpha/graphics monochrome display, a bidrectional
alphanumerics and graphics printer, and mass storage tape drive all integrated into a
marvelously designed and compact case. It's operating system was seemlessly integrated
with a powerful BASIC programming language that included intuitive graphics and
input/output capabilities.
The HP-85A was also wonderfully expandable through four ports on the back of the case
for adding plug in ROMS and modules.
Specifications
CRT DISPLAY
Size: ..................................... 12.7 cm (5 in.) diagonal
Alphanumeric capacity: .... 16 lines x 32 characters
Graphics capacity: ............ 192 x 256 dots
Scrolling capacity: ............. 64 lines
Character set: ..................... 256 characters; set of 128 + same set underscored
Character font: ................... 5 x 7 matrix
Intensity: ............................. adjustable
Cursor: ............................... underscore
BASIC LANGUAGE AND OPERATING SYSTEM
Standard ROM ............................ 32K bytes
Maximum add-on ROM ............. 48K bytes
CRT memory RAM .................... 8K bytes
USER READ/ WRITE MEMORY
Standard .................................... 16K bytes
Maximum ................................... 32K bytes
TOTAL MEMORY
Standard .................................... 56K bytes
Maximum ................................. 120K bytes