Timeline for Did anyone ever put half a megabyte of memory in an Altair?
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| Nov 8, 2021 at 19:13 | answer | added | Flydog57 | timeline score: 4 | |
| Nov 8, 2021 at 14:31 | comment | added | cjs | @Brian Given that IMSAI built and advertised 64K memory boards in 1977 and supported systems with up to a megabyte of memory, it seems likely that at least in '77-78, before the launch of the 8088, there were users buying/building large-memory 8-bit configurations. And of course with MP/M, released in 1979, there was a direct application for large-memory 8-bit systems since each separate running program needed its own bank (likely at least 32K) for its TPA. (MP/M-86 did not appear until 1981.) | |
| Nov 8, 2021 at 8:54 | answer | added | cjs | timeline score: 16 | |
| Nov 8, 2021 at 8:48 | history | became hot network question | |||
| Nov 8, 2021 at 4:08 | history | edited | rwallace | CC BY-SA 4.0 | typo |
| Nov 8, 2021 at 4:05 | vote | accept | rwallace | ||
| Nov 8, 2021 at 1:45 | answer | added | Raffzahn | timeline score: 26 | |
| Nov 8, 2021 at 1:40 | comment | added | Brian | Lots of S100 memory cards supported bank switching in some form so yes. An example was the Cromemco 64KZ Dynamic RAM Board which had physical switches (so cards would not interfere with each other) to support up to 8 such cards in a system and soft switches (so software could control which bank(s) were active). Ref: Manual s100computers.com/Hardware%20Manuals/Cromemco/… The website, s100computers.com hosting the manual is a good source of S100 information. Not sure somebody would buy 512K of RAM and not upgrade to a 16 bit processors however. | |
| Nov 8, 2021 at 0:48 | history | asked | rwallace | CC BY-SA 4.0 |