website/content/museum/casio-pb-1000.md

title, categories, types, origins, years, cpus, params

title	categories	types	origins	years	cpus	params
Casio PB-1000	Computers	Pocket	Japan	1987	CMOS	name image company company_name specs tabs forum_thread photos hardware emulators links oc_id source PB-1000 /media/museum/photos/casio_pb1000_system_s2.jpg /companies/casio Casio label value NAME PB-1000 label value MANUFACTURER Casio label value TYPE Pocket label value ORIGIN Japan label value YEAR 1987 label value BUILT IN LANGUAGE C61 Basic interpreter, Assembler, File Manager, Editor label value KEYBOARD 64 calculator keys + 13 sensitive keys + 16 LCD sensitive areas label value CPU CMOS, Hitachi HD61700 8-bit label value SPEED Unknown label value CO-PROCESSOR None label value RAM 8 KB + optional 32 KB RAM card label value ROM 32 KB + 3 KB included into the CPU label value TEXT MODES 32 char. x 4 lines (32 x 8 virtual screen) label value GRAPHIC MODES 193 x 32 pixels label value COLORS Grey LCD label value SOUND Buzzer label value SIZE / WEIGHT 18.7 (W) x 9.7 (H) x 2.4 (D) cm / 390g with batteries label value I/O PORTS Expansion connector label value POWER SUPPLY 3 x AA batteries label value PERIPHERALS MD-100 3.5'' FDD unit, FA-7 tape interface (both devices include a printer port and an RS-232 interface) label value PRICE Unknown photos hardware emulators links 1109 title subtitle text image RUNNING The bottom line displays the menu, the three top lines show the content of the RAM memory. /media/museum/photos/casio_pb1000_system_s4.jpg title subtitle text image KEYBOARD CLOSE-UP /media/museum/photos/casio_pb1000_keyboard_s1.jpg title subtitle text image CLOSED The PB-1000 features only one connector, intended for FA-7 and MD-100 expansions. /media/museum/photos/casio_pb1000_sides_s1.jpg title subtitle text image INSIDE The logic card is located under the keyboard. It supports only the CPU, ROM and RAM chips. Display drivers are located behind the LCD display. **(1)** Expansion connector\ **(2)** Optional RAM card connector\ **(3)** 8 KB RAM chip (Toshiba TC-5565)\ **(4)** 32 KB ROM chip (NEC 23C256)\ **(5)** Hitachi HDS61700 processor. /media/museum/photos/casio_pb1000_inside_s1.jpg title subtitle text image FA 10 Plotter and tape interface The FA-10 offered a 4 colors plotter and a tape interface where you could plug an external tape-recorder or a CM1 Casio tape-recorder. /media/museum/hardware/casio_pb700_fa10.jpg title subtitle text image FA-11 INTERFACE Plotter + Tape recorder /media/museum/hardware/casio_pb770_fa11-extension.jpg title url platform text PB 1000 emulator http://www.pisi.com.pl/piotr433/pb1000ee.htm Windows The program emulates the HD61700 microprocessor and uses the ROM dump from the original calculator, therefore it should function almost exactly like the real one. title url text Andreas Wichmann's page http://www.itkp.uni-bonn.de/~wichmann/pb1000.html lots of useful information and links about the PB-1000 title url text Casio PB-1000 http://homepage3.nifty.com/lsigame/pb-1000/pb-1000.htm Very interesting site (in Japanese) title url text Silrun Systems - The home of programmable Casio pocket calculators http://www.silrun.de/ German and English zipped manuals 1139 url date https://web.archive.org/web/20230608154227/http://www.old-computers.com/museum/computer.asp?c=1139 2023-06-08

The Casio PB-1000 was an original, well designed and powerful pocket computer for its time.

On top of its standard QWERTY keyboard, a row of sensitive keys allowed fast scientific calculations, menus access and text editing. The 4-line LCD display also had 16 sensitive areas.

The computer could be programmed either in Basic or Assembly language. The C61 Basic interpreter, based on Japan Industrial Standard BASIC, had a wide range of built-in mathematic, trigonometric and statistic functions. Assembly programs had to be typed by using the built-in editor then compiled. The user's manual gave little information about CPU instructions and, oddly enough, Casio and it's distributors never released a full description of the whole CPU's instructions set, although Casio published an incomplete "Technical Reference Manual".

The processor was an Hitachi HDS61700. It contained a small amount of ROM and RAM, as well memory management and I/O circuitry. The memory was managed like a virtual disk. Several Basic or Assembly programs as well as ASCII text could be stored together in the same RAM area.

Two extensions were released for the PB-1000, the FA-7 Serial, Parallel and tape recorder interface, and the rare MD-100 3.5" floppy drive unit.

The PB-1000 was followed by the PB-2000 which lost the lift up display but had the unique feature of being programmable in ANSI C language.