| ??? 09/15/05 15:10 Read: times |
#101134 - ISP Responding to: ???'s previous message |
Erik Malund said:
Of course, but is this a "programmer" ? FlashMagic, for instance, is not a "programmer" it is ISP software, the UART used is still not a "programmer". If I recall from a glance at Craigs devboard it has an ISP connection and thus no "programmer" is required. I'd say that depends on how you look at it. If all you needed was a cable then I'd agree with you. But with Atmel, at the very least you need a '125 or '126 with some resistors and capacitors. The hardware might not be as elaborate as a traditional EPROM programmer, but it's certainly more than just a cable. Whether that supporting circuitry is part of the hardware (such as with the 8052.com SBC) or whether there are just pins on the board and all that circuitry has to be placed on an external "programmer" is just a matter of geography--ISP has simplified the programmer hardware enough that it is not unreasonable to include the "programmer" in the circuit itself so that all you need is a cable. But the programmer hasn't been eliminated, it's just been absorbed by the main circuit--and now the developer needs to understand the details of ISP to accomplish that. Again, if I seem to be nit-picking it is to avoid ISP (with the means required) getting mixed up with kitchen table parallel programmers. I'd say the difference between a parallel programmer and an ISP "programmer" is a difference in its implementation, not its purpose. I don't believe any ISP on the market can truly be accomplished by simply connecting the port pins to pins on the PC via a cable with no supporting circuitry. ISP may have simplified what is required of a programmer but it hasn't eliminated the programmer itself. Regards, Craig Steiner |
| Topic | Author | Date |
| Atmel's bad informing (again) | 01/01/70 00:00 | |
| Informative Post. | 01/01/70 00:00 | |
| Errata | 01/01/70 00:00 | |
Latest news on bugs in 8253 | 01/01/70 00:00 | |
| Thanks & Congrat's making Programmer | 01/01/70 00:00 | |
| AT89S8252 programmer | 01/01/70 00:00 | |
| AT89S8252 programmer | 01/01/70 00:00 | |
| good point | 01/01/70 00:00 | |
| Datasheets | 01/01/70 00:00 | |
| I'm puzzled | 01/01/70 00:00 | |
| ISP programmer | 01/01/70 00:00 | |
| I thought ... | 01/01/70 00:00 | |
| Of course, but is this a "programmer" ? | 01/01/70 00:00 | |
| ISP | 01/01/70 00:00 | |
| I see the basic difference between a "tr | 01/01/70 00:00 | |
| Differences between ISP | 01/01/70 00:00 | |
| Timing critical SPI, well I'll be | 01/01/70 00:00 | |
| New user needs help | 01/01/70 00:00 | |
| what program, it'can't be the ISP interf | 01/01/70 00:00 | |
| please clarify | 01/01/70 00:00 | |
| ISP!? | 01/01/70 00:00 |