| ??? 07/03/09 18:10 Read: times |
#166719 - PCI latency? Responding to: ???'s previous message |
When it comes to parallel port adapters, I haven't needed to use such equipment in a long time, so I'm not sure if the programs are installing drivers for direct access to registers or if they are using normal WIN32 API for controlling programmers etc. Obviously, anything that expects direct access will fail for any USB-to-xx adapter.
Michael Karas said:
(There is another whole subject concerning the use of PCI and PCIe addin parallel port boards for modern WinXP and WinVista computers that has a similar sad outcome that we can discuss another day). I guess you are thinking about the PCI latency timer issues and bus mastering. For things that can work with PCI-connected parallel ports, there is always the possibility of using a PC-card or Expresscard to get a parallel port on a laptop. But the cost of the adapter may be high enough that it is better to replace the parallel equipment. |
| Topic | Author | Date |
| ISP-flash programmer | 01/01/70 00:00 | |
| Re: ISP-flash programmer | 01/01/70 00:00 | |
| USB-DB25 converters are not reliable | 01/01/70 00:00 | |
| RE: USB-Serial / Parallel converters | 01/01/70 00:00 | |
| Not parallel port converters? | 01/01/70 00:00 | |
| USB To "Parallel" Adapters | 01/01/70 00:00 | |
| PCI latency? | 01/01/70 00:00 | |
| PCI Latency....Least of Problem... | 01/01/70 00:00 | |
| PCI latency can be a significant problem | 01/01/70 00:00 | |
| PCI Speed | 01/01/70 00:00 | |
| Bit-banging can be extremely slow | 01/01/70 00:00 | |
| Other Bit Banging | 01/01/70 00:00 | |
Slave processor a need for modern PC | 01/01/70 00:00 | |
| ISP Flash Programmer with USB | 01/01/70 00:00 |