Tsev > Exhibition > Ntsiab lus

Cov yeeb yaj duab saib yeeb yaj kiab Xaiv ib nti VDC

Mar 14, 2019

Ceebtoom tias ntau ntau lub tsev-lub computer tsis siv VDP nti, tabsis ua rau tag nrho cov yeeb yaj duab hauv video los ntawm ntau ntau cov logic chips, (piv txwv yog cov Apple II, PET, thiab TRS-80). Vim tias cov hau kev no yooj yim heev rau cov duab video generators yuav muaj peev xwm heev (los yog tsis tshua muaj txheej thaum ub, nyob ntawm qhov tsim ntawm tus tsim), tab sis kuj xav tau ntau yam ntawm cov khoom.


Ntau lub nruab ntug siv qee cov qauv ntawm cov txheej txheem tsim thaum ntxov uas tsim tau los tsim tsim video; piv txwv muaj xws li ZX Spectrum thiab ZX-81 systems thiab Electronics BK-0010 tab sis muaj ntau lwm tus. Cov kev siv thaum ntxov yog feem ntau txheej thaum ub, tab sis tom qab cov kev siv yuav ua rau cov yees duab zoo tshaj plaws zoo li ib qho hauv SAM Coupé.


Cov tshuab no yuav ua rau muaj peev xwm muaj peev xwm ua tau ntau yam, tiam sis cov neeg tsis tshua muaj qhov sib xws ntawm cov cuab yeej thaum ntxov tau hais tias lub peev xwm ntawm PLA raws li feem ntau yeej tsis tshua muaj nqis tshaj cov uas siv cov kev yees duab video los sis cov yees duab coprocessors uas muaj nyob rau ntawm tib lub sijhawm. Tom qab kev daws PLA, xws li cov neeg siv CPLDs los yog FPGAs, yuav ua rau ntau tshaj li qhov video systems, tshaj qhov ua tau siv tawm ntawm cov khoom txee.


Ib qho kev siv sib xyaw ua kua (hybrid) yog siv lub voj voog video (feem ntau ntawm Motorola 6845) ua lub hauv paus thiab nthuav nws cov kev ua haujlwm nrog cov logic logic los yog ASIC. Ib qho piv txwv ntawm xws li kev sib tw ua kua yog VGA daim npav qub, uas siv 6845 nrog ASIC, uas yog vim li cas tag nrho cov VGA tam sim no video tshuab tseem siv cov cuab yeej kho vajtse uas tau muab los ntawm 6845.