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HP-71B & HP Saturn 
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Supreme God
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Joined: 21 Oct 2009 09:08
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Location: Россия
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Мне казалось, что когда я искал что-то по 4-битным процессорам, я в те годы весь Интернет перерыл... :o
Но поскольку я сейчас языком Форт увлёкся, читаю материалы по этому языку, но на одном форуме
меня просто резко удивило: :esurprised:
Obviously my HP-71's Forth wouldn't qualify. It came around before ANS Forth anyway; but since it has a 4-bit data bus and a 20-bit address bus, a cell is 20 bits, and a character is 8 bits or two address units. (It addresses a meganybble, or half a megabyte without banking.) That was my intro to Forth, in about 1989 or 1990.

Я прямо аж притормозил... а что это у него такое было с 4-битной шиной данных и 20-битной шиной адреса? :exclaim:

А это у него был, оказывается, наладонник: HP-71B a hand-held computer:
HP-71B_Taschencomputer.jpg [ 71.4 KiB | Viewed 249 times ]

И в этом наладоннике был микропроцессор HP Saturn :
HP_Saturn_1LT8_.jpg [ 205.49 KiB | Viewed 249 times ]

Family of 4-bit datapath, nibble serial, CISC, calculator, pocket computer and printer general purpose processors with 20-bit addressing capabilities and 64-bit general purpose registers
The Saturn family of 4-bit microprocessors was developed by Hewlett-Packard in the 1980s mainly for programmable scientific calculators / handheld computers,  and to some extent, printers and handheld logic analyzers. It succeeded the Nut family of processors used in earlier calculators. The original Saturn chip was first used in the HP-71B hand-held BASIC-programmable computer, introduced in 1984. Later models of the family powered the popular HP 48 series of calculators, among others. The HP 49 series initially used the Saturn CPU as well, until the NEC fab could no longer manufacture the processor for technical reasons in 2003.

Впервые слышу... очень неподецки был удивлён... :o


17 May 2020 20:32
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Joined: 05 Nov 2007 06:08
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17 May 2020 22:37
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