| ??? 02/14/11 16:57 Read: times |
#181091 - on a limited basis ... Responding to: ???'s previous message |
In 1985, Motorola released their MC68HC11 series, of which some had on-board EEPROM which was, in fact, mapped into the memory space, which, I imagine most folks recognize, due to the Motorola architecture, meant it could contain executable code. This meant that the 'HC11's could implement both ISP and IAP with appropriate hardware. Further, the 'HC05's, also from Motorola, were capable of having their internal RAM programmed in-situ, which is one of several ways in which they could be bootloaded. That was not a widely used feature, however. With sufficiently detailed study, one could see a number of ways in which data could be loaded into the MCU's SRAM.
RE |
| Topic | Author | Date |
| Cross-post: "When did ISP become commonplace?" | 01/01/70 00:00 | |
| Pre 1996 | 01/01/70 00:00 | |
| I was doing ISP in 1996 | 01/01/70 00:00 | |
| Roll your own | 01/01/70 00:00 | |
| 1995 | 01/01/70 00:00 | |
| Flash | 01/01/70 00:00 | |
| Single supply | 01/01/70 00:00 | |
| 1998 | 01/01/70 00:00 | |
| 1992 | 01/01/70 00:00 | |
| Sub question: as a built-in feature of the microcontroller | 01/01/70 00:00 | |
| on a limited basis ... | 01/01/70 00:00 | |
| RE: not a widely used feature | 01/01/70 00:00 | |
| When does anything become commonplace | 01/01/70 00:00 | |
| RE: When does anything become commonplace? | 01/01/70 00:00 | |
| Mid 90s | 01/01/70 00:00 | |
| introduced in 1985 | 01/01/70 00:00 | |
It depends on how it was used | 01/01/70 00:00 | |
| one way to answer | 01/01/70 00:00 |