| ??? 05/06/06 08:48 Read: times |
#115751 - The closest thing to RISC Responding to: ???'s previous message |
Jerry, Microchip tries to convince us that the PIC is a RISC cpu - unfortunately it is not. Brain dead, yes, but not RISC. Firstly a RISC cpu is not accumulator based and most instructions execute in 1 clock. An example of a RISC cpu doing video is an entry in the 2005 Philips LPC competition ( see www.circuitcellar.com) where a LPC2000 series micro is generating VGA. Recently, a friend asked me of suggestions for a simple design to generate composite color video (PAL or NTSC) whilst having a fair amount of cpu performance available. Possible suggestions were: OSD (on screen display) ic as used in TVs - not enough resolution or using a video encoder ic and a frame buffer memory with the cpu generating the timings via timers. Another suggestion was to hack a dvd player - these have an ASIC with a grunty cpu and video generation hardware inbuilt - try to get info on the ics though..... |
| Topic | Author | Date |
| Video on the 8052 | 01/01/70 00:00 | |
| Good page! | 01/01/70 00:00 | |
| They'll have to be pretty fast ... | 01/01/70 00:00 | |
| Not really...? | 01/01/70 00:00 | |
| That requires a fair amount of speed | 01/01/70 00:00 | |
| 1MHz | 01/01/70 00:00 | |
| That's misleading in this context | 01/01/70 00:00 | |
| yeah but it ties the processor up | 01/01/70 00:00 | |
| That's a given. | 01/01/70 00:00 | |
| Remember the Sinclair ZX80 | 01/01/70 00:00 | |
| Yes... | 01/01/70 00:00 | |
| I see... | 01/01/70 00:00 | |
| The closest thing to RISC | 01/01/70 00:00 | |
not ยงť+ but maybe an inspiration | 01/01/70 00:00 |