180:(Special Computer APL Machine Portable) based on the PALM processor with a Philips compact cassette drive, small CRT display, and full-function keyboard.
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The PALM was used to implement an emulator, which in turn could run machine instructions originally written for other machines; this is how
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Daves Old
Computers, This page has a link with a picture of the IBM PALM circuit board as well as many photos of the IBM 5100
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280:. The Maintenance Information Manual linked at the bottom of the page includes an appendix describing the microcode.
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A Microprocessor-based portable computer: The IBM 5100, Proceedings of the IEEE ( Volume: 64, Issue: 6, June 1976)
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follow-on machines. It is likely PALM was also used in other IBM products as an embedded controller.
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In 1973, the IBM Los Gatos
Scientific Center developed a portable computer prototype called
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not a chip but a single board .. an IBM 1130 emulator in PALM microcode
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79:, though they used that term to mean a processor that executes
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145:) of memory. The IBM 5100 could be configured with up to 64+
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91:. The PALM processor was a circuit board containing 13
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Heart component of IBM 51x0 early day luggable/portable
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235:an emulator, used only for APL, not for BASIC
173:scheme was used to extend the address space.
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130:data bus, with two additional bits used for
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53:(CPU) developed by IBM. It was used in the
263:about various Microcode implementations
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247:TOSEC: IBM PC Compatibles (2012-04-23)
205:salvaging a huge IBM 1130 APL program
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101:in square metal cans, 3 conventional
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231:"John Titor was right? IBM 5100"
134:. PALM can directly address 64
208:"What is a Personal Computer?"
109:, and 1 round metal can part.
47:Program All Logic in Microcode
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149:KB (APL + BASIC ROMs make 64+
83:to implement a higher-level
103:transistor–transistor logic
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55:IBM 5100 Portable Computer
57:, a predecessor of the
51:central processing unit
294:IBM personal computers
75:referred to PALM as a
107:dual in-line packages
299:IBM microprocessors
27:General information
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89:integrated circuit
22:IBM PALM processor
216:. November 1983.
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249:Internet Archive
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85:instruction set
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161:) and up to 64
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126:PALM has a 16-
114:IBM System/360
77:microprocessor
49:) is a 16-bit
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105:(TTL) ICs in
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169:. A simple
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213:PC Magazine
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96:gate arrays
288:Categories
184:References
61:, and the
81:microcode
272:Pictures
99:packaged
67:IBM 5120
63:IBM 5110
32:Launched
153:KB) of
93:bipolar
165:KB of
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138:KB (64
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132:parity
59:IBM PC
178:SCAMP
121:5100
65:and
43:PALM
41:The
35:1975
167:RAM
159:ROM
143:KiB
128:bit
117:APL
73:IBM
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