| ??? 04/11/09 22:28 Read: times |
#164536 - The signaling protocol is well-defined Responding to: ???'s previous message |
It's the higher-level protocol that will give you fits.
If you GOOGLE Centronics you'll find plenty of information about what the individual signals have to do and what they mean. However, the content of the information you transmit, aside from printable ascii characters, especially escape sequences, that will provide you those endless hours of entertainment that you apparently seek. At reasonable dot-density, a page requires LOTS of memory to render and store, prior to interpreting and transmitting it to the printer. Then, of course, there's the question of rotating it to the proper orientation, too. On a PC with lots of memory it's easy. On an 805x with only 64KB of read/write data space ... well ... you'll find it "challenging." I'd suggest you confer with some of the longbeards in the comp.arch.embedded newsgroup. They may know some helpful tricks. RE |
| Topic | Author | Date |
| How to print graphs on a printer at centronix port by 8051 | 01/01/70 00:00 | |
| Assume nothing! | 01/01/70 00:00 | |
| Specifications donot provide protocols | 01/01/70 00:00 | |
| So you need the technical specifications! | 01/01/70 00:00 | |
| Its a low cost Standalone system | 01/01/70 00:00 | |
| 01/01/70 00:00 | ||
| the protocol | 01/01/70 00:00 | |
| some links | 01/01/70 00:00 | |
| The signaling protocol is well-defined | 01/01/70 00:00 | |
| Actually quite simple to use a matrix printer. | 01/01/70 00:00 | |
| Questions of definition | 01/01/70 00:00 | |
| A graph normally requires graphics | 01/01/70 00:00 | |
| Indeed, but one is a subset of the other. | 01/01/70 00:00 | |
| You would do banded output | 01/01/70 00:00 | |
| suppose the data is presented in portrait format ... | 01/01/70 00:00 | |
| Band size doesn't matter so much | 01/01/70 00:00 | |
| It only feeds in portrait format | 01/01/70 00:00 | |
| No | 01/01/70 00:00 | |
You're right within the scope of your thinking | 01/01/70 00:00 |