Difference between revisions of "Talk:Fabri-Tek MP12"
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Although it's consistently referred to as a ''microprocessor'', I am now far from sure it's in the usual sense as a (V)LSI device. [[User:Larsbrinkhoff|Larsbrinkhoff]] ([[User talk:Larsbrinkhoff|talk]]) 10:23, 30 July 2024 (CEST) | Although it's consistently referred to as a ''microprocessor'', I am now far from sure it's in the usual sense as a (V)LSI device. [[User:Larsbrinkhoff|Larsbrinkhoff]] ([[User talk:Larsbrinkhoff|talk]]) 10:23, 30 July 2024 (CEST) | ||
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| + | : It's not. If you look in the documentation, [http://www.bitsavers.org/pdf/fabritek/mp12/400-0227-01_Fabri-Tek_MP12_System_Manual_3ed_Section_3_1974.pdf Section 3] has a complete set of circuit diagrams for the CPU card (just one card!), and on pg. 9 (of the PDF) there's a list of all the IC's - and it's all SSI, with ''one'' MSI (a 4-bit adder). | ||
| + | : Which does leave me somewhat curious as to what "microprocessor" meant to them. Some early DEC gear used it to mean 'microcode processor', but there's no microcode here; if you look in [http://www.bitsavers.org/pdf/fabritek/mp12/400-0227-01_Fabri-Tek_MP12_System_Manual_3ed_Section_2_1974.pdf Section 2], there's a description of the execution of each instruction, and it all seems to be run by a state machine - i.e. hard-wired logic. I guess it just means 'miniature processor'! [[User:Jnc|Jnc]] ([[User talk:Jnc|talk]]) 13:05, 31 July 2024 (CEST) | ||
Latest revision as of 11:06, 31 July 2024
Microprocessor?
Although it's consistently referred to as a microprocessor, I am now far from sure it's in the usual sense as a (V)LSI device. Larsbrinkhoff (talk) 10:23, 30 July 2024 (CEST)
- It's not. If you look in the documentation, Section 3 has a complete set of circuit diagrams for the CPU card (just one card!), and on pg. 9 (of the PDF) there's a list of all the IC's - and it's all SSI, with one MSI (a 4-bit adder).
- Which does leave me somewhat curious as to what "microprocessor" meant to them. Some early DEC gear used it to mean 'microcode processor', but there's no microcode here; if you look in Section 2, there's a description of the execution of each instruction, and it all seems to be run by a state machine - i.e. hard-wired logic. I guess it just means 'miniature processor'! Jnc (talk) 13:05, 31 July 2024 (CEST)
