ugfelong@cs.Buffalo.EDU (Edward Felong) (11/01/88)
What exactly happens when the serial ports are configured ? Some of my software doesn't recognize a 4800 baud printer in slot 1 unless I turn the computer on with system utilities first. Can I just BSAVE a section of memory and BLOAD it with startup program ? I just thought I'd stop lurking in comp.sys.apple and vote "for the good old days" of appleII+ec :^) (by the way my news reader lets me "/GS/j" which junk's all of those unsightly IIgs articles, or in other words I vote YES to comp.sys.gs ) Ed
matthew@sunpix.UUCP ( Sun NCAA) (11/03/88)
In article <2340@cs.Buffalo.EDU>, ugfelong@cs.Buffalo.EDU (Edward Felong) writes: > > What exactly happens when the serial ports are configured ? > Some of my software doesn't recognize a 4800 baud printer > in slot 1 unless I turn the computer on with system utilities first. > Can I just BSAVE a section of memory and BLOAD it with startup > program ? > The serial port configurations are stored in auxilary memory as follows: $0478 thru $047B - Serial Port #1 ================================= $0478 ACIA control register $0479 ACIA command register $047A Flags bit 7: echo output on display ( 0 = no echo ) bit 6: generate LF after CR ( 0 = no LF ) bit 5: always 0 bit 4: always 0 bit 3: always 0 bit 2: always 0 bit 1: always 0 bit 0: 1 = communications port; 0 = printer port $047B max line length bit 7 - 1: line length ( 0 = do not insert CR ) $047C thru $047F - Serial Port #1 ================================= $047C ACIA control register $047D ACIA command register $047E Flags bit 7: echo output on display ( 0 = no echo ) bit 6: generate LF after CR ( 0 = no LF ) bit 5: always 0 bit 4: always 0 bit 3: always 0 bit 2: always 0 bit 1: always 0 bit 0: 1 = communications port; 0 = printer port $047F max line length bit 7 - 1: line length ( 0 = do not insert CR ) to capture these values using machine language do the following: LDA #$04 STA $3D #SET SOURCE START HIGH STA $3F #SET SOURCE END HIGH LDA #$78 STA $3C #SET SOURCE START LOW LDA #$7F STA $3D #SET SOURCE END LOW LDA #$03 STA $43 #SET DESTINATION HIGH LDA #$00 STA $42 #SET DESTINATION LOW SEC #FLAG A MOVE FROM AUX MEMORY JSR $C311 #DO THE ACTUAL MOVE RTS #MAIN MEMORY $0300-$0307 NOW HAVE VALUES and this to set all of them: LDA #$03 STA $3D #SET SOURCE START HIGH STA $3F #SET SOURCE END HIGH LDA #$00 STA $3C #SET SOURCE START LOW LDA #$07 STA $3D #SET SOURCE END LOW LDA #$04 STA $43 #SET DESTINATION HIGH LDA #$78 STA $42 #SET DESTINATION LOW CLC #FLAG A MOVE TO AUX MEMORY JSR $C311 #DO THE ACTUAL MOVE RTS #AUX MEMORY $0478-$047F NOW HAS #MAIN MEMORY $0300-$0307 VALUES -- Matthew Lee Stier (919) 469-8300| Sun Microsystems --- RTP, NC 27560| "Wisconsin Escapee" uucp: {sun, rti}!sunpix!matthew |
ugfelong@cs.Buffalo.EDU (Edward Felong) (11/10/88)
In article <257@greens.UUCP> matthew@sunpix.UUCP ( Sun NCAA) writes: >In article <2340@cs.Buffalo.EDU>, ugfelong@cs.Buffalo.EDU (Edward Felong) writes: >> >> What exactly happens when the serial ports are configured ? >> >The serial port configurations are stored in auxilary memory as follows: [much deleted ...] >to capture these values using machine language do the following: > LDA #$04 > STA $3D #SET SOURCE START HIGH > STA $3F #SET SOURCE END HIGH > LDA #$78 > STA $3C #SET SOURCE START LOW > LDA #$7F > STA $3D #SET SOURCE END LOW ^^^ should be $3E > LDA #$03 > STA $43 #SET DESTINATION HIGH > LDA #$00 > STA $42 #SET DESTINATION LOW > SEC #FLAG A MOVE FROM AUX MEMORY ^^^ CLC moved bytes FROM AUX > JSR $C311 #DO THE ACTUAL MOVE > RTS #MAIN MEMORY $0300-$0307 NOW HAVE VALUES > >and this to set all of them: > LDA #$03 > STA $3D #SET SOURCE START HIGH > STA $3F #SET SOURCE END HIGH > LDA #$00 > STA $3C #SET SOURCE START LOW > LDA #$07 > STA $3D #SET SOURCE END LOW ^^^ should be $3E > LDA #$04 > STA $43 #SET DESTINATION HIGH > LDA #$78 > STA $42 #SET DESTINATION LOW > CLC #FLAG A MOVE TO AUX MEMORY ^^^ SEC moved bytes TO AUX > JSR $C311 #DO THE ACTUAL MOVE > RTS #AUX MEMORY $0478-$047F NOW HAS > #MAIN MEMORY $0300-$0307 VALUES >Matthew Lee Stier (919) 469-8300| >Sun Microsystems --- RTP, NC 27560| "Wisconsin Escapee" >uucp: {sun, rti}!sunpix!matthew | I got the printer to work fine with the changes I indicated. Could someone recommend some reference material for what the "Applesoft BASIC Programmer's Reference Manual" lists as: $C000 $CFFF Hardware I/O addresses Just getting the "ProDos Techincal Reference Manual" from the dealer I bought my //c from was like pulling teeth, and I haven't seen any ads for books in any magazines. Please e-mail since this appears to be of NO interest to anyone else in this newsgroup. (wouldn't want to get in the way of those GS articles :) Ed Felong 'ugfelong@cs.buffalo.EDU' or maybe 'v095gzmx@sunybcs.BITNET'
aash@ms.uky.edu ( Aashi Deacon ) (11/11/88)
In article <2569@cs.Buffalo.EDU> ugfelong@sunybcs.UUCP (Edward Felong) writes: > >Please e-mail since this appears to be of NO interest to anyone else >in this newsgroup. (wouldn't want to get in the way of those GS articles :) > There IS interest here for technical "other apple" information. I have an apple //c and, for instance, would like to know of some good reference books (not the wimpy books that came with it). I would also like a good assembly language book, and some good information about C compilers. AND (haha, i want everthing no? :-) how about some information on how to upgrade memory? add a hard drive? modem? external keyboard? will an extended keyboard (like for Mac II) work? is this a good start?