====== Hewlett Packard HP48S/SX/G/GX ======
===== Features =====
* Memory: 32kb RAM [HP48S], 128KB RAM [HP48SX], 1MB ROM, 32kb RAM [HP48G], 128kb RAM [HP48GX]
* 131 x 64 monochrome LCD display
* Memory/cartridge slot
* Battery slot
* Infrared interface
* Serial rs232 interface
===== Usage =====
Notice that pressing ON and - decreases contrast, while ON and + increases contrast
MESS supports the following various rom revisions of both HP 48S and HP 48G. You can switch between them, changing the -bios parameter. At command line,
== hp48s ==
"-bios 0" or "-bios sxrom-a" = sxrom-a
"-bios 1" or "-bios sxrom-b" = sxrom-b
"-bios 2" or "-bios sxrom-c" = sxrom-c
"-bios 3" or "-bios sxrom-d" = sxrom-d
"-bios 4" or "-bios sxrom-e" = sxrom-e
"-bios 5" or "-bios sxrom-ea" = sxrom-e(Alternate)
"-bios 6" or "-bios sxrom-f" = sxrom-f
"-bios 7" or "-bios sxrom-g" = sxrom-g
== hp48g ==
"-bios 0" or "-bios gxrom-k" = gxrom-k
"-bios 1" or "-bios gxrom-l" = gxrom-l
"-bios 2" or "-bios gxrom-m" = gxrom-m
"-bios 3" or "-bios gxrom-p" = gxrom-p
"-bios 4" or "-bios gxrom-r" = gxrom-r
===== Known Issues =====
Notice that this system is a TESTDRIVER, i.e. it's not included in the pre-compiled MESS you find at mess.org -- http://www.mess.org. (G memory management not finished - S is a few bugfixes from working)
===== History and Trivia =====
Scientific Calculators.
The HP48 series was the top of the HP range from 1990 until the introduction of the HP49 in 1999. The range consists of the HP48S, HP48SX, HP48G, HP48G+, HP48GX and HP48GII. The GII model is still available.
The basic design and layout of the 48 series was also used for the HP38G, and then augumented to produce the HP49G, HP39G and HP40G. In addition to software changes between the models, the main difference between the 48/38 series and the 49/39/40 machines is the keyboard: the 48/38 machines having a "traditional" HP quality keyboard; the newer models having rubber keys. The displays have also been improved: the G series are better than the S series. Recent G series models use the even better display from the 49/39/40 machines.
The same CPU and much of the operating system is shared between the 28, 38, 39, 40, 48 and 49 machines. Consequently it is possible to port software from the earlier machines provided machine specific capabilities are avoided.
The HP48GII is different to the rest of the HP48 series because it uses an ARM CPU, like the HP49G+, to emulate the Saturn CPU of the earlier models. It also has a significantly different case and keyboard design.
//(info from hpcc.org)//
===== Links =====
* Official and Public Domain HP ROM images -- http://www.hpcalc.org/hp.php
* HP48S at HP Museum -- http://www.hpmuseum.org/hp48s.htm
* HP48 at HPCC -- http://www.hpcc.org/calculators/hp48.html
===== Other Emulators =====
* Emu48 -- http://privat.swol.de/ChristophGiesselink/emu48.htm
Generated on Sun Jul 19 10:17:28 2009