Atari 400 Hardware Manual

108, Atari 400 NORMAL YnoDE 7 ?6 LINE.5 TV scRrEN YhOO\FIED ToTA L= lg2 moog LrNe + moDE 7 OI 5I'LAY f oo \F IeD tnoUe ? DI5PLAV 6 t,S -- 43 6\a -- IIL TOTA L s<Ah 2.q 4A r'16 tqz 112 -T- I I I r9L LINE5 'i ;:- (r rns BYIE) ----> :1 )- 3 q ( 5d 5Z V lbo 1 8 J T 6l I 2 …

85, 3*,:r;i, PJ E r!i:i9! r:r ;- iitt =1 o (I c0 CC lrl = F o i-{H.:;F+# fFr "FF+r 1 tsrl rii I iiil::lr+i11 't"lllt i-rH llt l rEi!! :9ci'!,:r!6!:::!.: :l:!:ir:::::1!?!r.',"i x:::r"r;q :Illr:ic.;itr:?:r: !,? :rtrt!:;1 ::::;ria::.::lrir:: i:,3; -. r…

20, There are slx charcter inap modes, IR rnodes 2 through 7. Modes 2,6 and 7 are supported by the OS and BASIC (GRAPHICS 0,f and 2). In IR dodes 6 and 7, the upper two bits of each character Iraoe selec! one of four playfleld colors, For each 3e!g bit …

16, Menory Scan Counter Addresses each byte Mernory one l1ne worth loaded tnto the of rdenory 1s shlft reglster 7 6t5 413 2tt 0 | 7 6t5 4 2 tt 0 Shlft reglster data 1s dlsplayed for four Tv scan 11nes ln thls exarnple. In Instructlon Regtster (IR) dtsplay nodes 8 throu…

3, II. I. III. rv, TABLE OF CONTENTS INTRODUCTIoN. , . . . . . .... . .. .I. I DESCRTPTTON 0F HARDWARE. ... ,. .. ... .....,.,. ..r1.I ........... ',...rr. t B. POKEY......,. .........rr.23 c. SERIAL PORT........,.............,..,...II.25 D. INTERRUPT SYSTEM…

98, s ii i E;; !i e !t: ! ii s !'!'EJ.r I ! 13::!.r::l:i l!r:rr:::13 E:::Tr.:rli p::,1r.:Bli rf" ;: lrr.rTr.rnli :::::::. …