From: Groepaz (groepaz_at_gmx.net)
Date: 2003-08-24 22:19:08
On Sunday 24 August 2003 12:28, Ullrich von Bassewitz wrote: > This depends on the baudrate. The B machines have a maximum baud rate of > 19200, so at least the ones running at 2MHz should be fast enough. On the > other side, 38400 is definitely too fast for a 1MHz machine like the C64 > when using the IRQ. The question would be if 19200 runs reliable on a 1MHz > machine with a VIC, like the C64. Having interrupt driven transmit routines > will remove a lot of busy waiting, and the standard disk routines can be > used if the 6551 is connected to the IRQ line. Depending on the > application, 19200 baud may not feel a lot slower than 38400. mmmmh another idea would be looking at the novaterm drivers which appearently support the 6551 at up to 19200baud on a stock c64. gpz Message was sent through the cbm-hackers mailing list
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