Amakuru

Gukorana na mudasobwa zishaje akenshi biragoye kuko bidahuye nibikoresho bigezweho.Niba warabonye ko ibiciro bya TV hamwe na monitor ya CRT ishaje (cathode ray tube) byazamutse vuba aha, urashobora gushimira umuryango wa retro ukina na retro.Ntabwo gusa ibishushanyo-buke byerekana neza kuri CRT, ariko sisitemu nyinshi zishaje ntizishobora kubyara amashusho yemewe kuri moniteur igezweho.Igisubizo kimwe nugukoresha adapteri kugirango uhindure RF ishaje cyangwa ibimenyetso bya videwo bigizwe nibimenyetso bigezweho.Kugirango dufashe mugutezimbere ama adapteri, dmcintyre yakoze iyi mashusho yerekana amashusho ya oscilloscopes.
Mugihe cyo guhindura amashusho, dmcintyre yahuye nikibazo aho chip ya videwo ya TMS9918 itigeze itera urwego rwizewe.Ibi bituma bidashoboka gusesengura ibimenyetso bya videwo, byaba ngombwa kubagerageza kubihindura.Ibikoresho bya Texas TMS9918 VDC (Video Yerekana Mugenzuzi) chip irakunzwe cyane kandi ikoreshwa muri sisitemu ishaje nka ColecoVision, mudasobwa ya MSX, ibikoresho bya Texas TI-99/4, nibindi. .USB ihuza igufasha gufata byihuse imiterere ya oscilloscopes nyinshi, harimo na oscilloscopes ya Hantek ya dmcintyre.
Amashusho yerekana amashusho ahanini arasobanutse kandi arasaba imiyoboro mike ihuriweho gusa: Microchip ATmega328P microcontroller, 74HC109 flip-flop, hamwe na LM1881 ya sync ya videwo.Ibigize byose bigurishwa mububiko busanzwe.Iyo code ya dmcintyre imaze koherezwa kuri ATmega328P, biroroshye cyane gukoresha.Huza umugozi uva muri sisitemu winjizamo Video Trigger hamwe nu mugozi uva muri Video Trigger isohoka kuri monitor ikwiranye.Noneho huza USB umugozi winjiza oscilloscope.Shiraho urwego rwo gukurura kuruhande rukurikira hamwe na 0.5V.
Hamwe niyi mikorere, urashobora noneho kubona ibimenyetso bya videwo kuri oscilloscope.Kanda kodegisi izenguruka kuri videwo yerekana igikoresho gihinduranya hagati yikizamuka nikigabanuka cyikimenyetso.Hindura kodegisi kugirango wimure umurongo wa trigger, kanda kandi ufate encoder kugirango usubize umurongo wa trigger kuri zeru.
Ntabwo mubyukuri ikora amashusho yose, yemerera uyikoresha gusesengura ibimenyetso bya videwo biva kuri chip ya TMS9918.Ariko isesengura rigomba gufasha abantu guteza imbere amashusho ahuza guhuza mudasobwa zishaje na monitor ya kijyambere.