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.TITLE KERMIT-65 Microtek SV-622 serial com card .SBTTL 6502 version - Ted Medin ; Version 1.0 ; Based on the KERMIT Protocol. ; $Header: appmsv.m65,v 1.9 90/10/15 14:25:50 medin Locked $ .SBTTL Define start address for assembly .=$1003 ; Start assembly at hex 1003 .SBTTL Revision History ; ; Edit # Description ; ------ ----------- ; ;$Log: appmsv.m65,v $ Revision 1.9 90/10/15 14:25:50 medin new org of $7f00 for 3.87 version 1.8 ;Revision 1.8 88/12/22 09:40:58 medin ;use time constant for the wait routine ;Revision 1.7 88/08/16 16:20:30 medin ;fix break so it doesnt drop dtr ;Revision 1.6 88/02/06 21:45:13 medin ; Change output routine to check for input character before exiting. ;Revision 1.5 88/01/15 08:41:02 medin ;New origin for 3.81 ;Revision 1.4 87/06/29 10:05:13 medin ; Change wait rtn to use apple rom rtn, change origin to $7600 ;Revision 1.3 87/05/13 18:12:04 medin ; Change org to correspond with 3.76 ;Revision 1.2 87/02/21 00:05:40 medin ; Put the version in the hearld so we can keep track of ;the com drivers also. Thanks Rhoda ; DONT FORGET TO UPDATE THE VERSION ;Revision 1.1 86/10/28 10:28:13 medin ;Initial revision ; ; ; Vector for com cards starts here ; location $1003 for data ; location $1020 for routine jumps ; location $1040 for main routines ; sscdbd: .blkb 1 ;contains baud index(ala super serial card) used by init ; 6 - 300 baud ; 7 - 600 ; etc .blkb 1 crdnam: .word herld ; null terminated string of who we are kersli: .blkb 1 ; com slot $n0 kerins: .blkb 1 ; force initialization flag-when 0 endker: .blkb 2 ; address of end of main kermit flowfg: .blkb 1 ; flow flag for xon/xoff controll b7=1 yes tl0end .word endcom ;[1.5] end of this routine timect .blkb 1 ;[1.7] 1 ms delay via rom wait rtn .=$1020 ; future expansion tlinit: jmp tl2int ; initialize com card tl0cmd: jmp tl2cmd ; command for ACIA in A ; ; 0 - hang up ; $0b - set baud ; $0c - set break on the line ; $91 - xon ; $93 - xoff ; ; routine will return false(0) if unable tl0cp: jmp tl2cp ; check for input ch ready-0 false tl0gpc: jmp tl2gpc ; get input ch tl0ppc: jmp tl2ppc ; put output character tl0exi: jmp tl2exi ; reset card and restore initialized .=$1040 ; futures ;[1.4]wait: .blkb 3 ; wait routine-a reg contains milliseconds wait: .blkb 3 ; rom wait rtn 220=125ms,206=108ms,25=2ms prstr: .blkb 3 ; print string x=lsb,y=msb x&y->null terminated string rdkey: .blkb 3 ; read keyboard prcrlf: .blkb 3 ; print cr and lf telcnc: .blkb 3 ; check for keyboard character telspa: .blkb 3 ; set character parity ;[1.4] .=$7200 ; place to start com card assembly .=$7f00 ;[1.8][1.5] place to start com card assembly start = . ;need a label at begining kr2pch = $c088 ;data port kr2pst = $c089 ;status port kr2pcr = $c08a ;command port kr2pcc = $c08b ;control port mncinb = $18 ; Control port init(8 bit,no par,1-stop,1200 baud) mnminb = $b ; Master port init(DTR, RTS, no interrupts) mssinb = $8 ; status bit for input ready mssoub = $10 ;status bit for output busy moutb = $c ; mask for the output bits of command moutnt = $4 ; command to start output with interupts pinptr: .byte ; input buffer pointer inptr: .byte ; input buffer pointer for get poutpt .byte ;[59] output buffer pointer outptr .byte ;[59] " " " for put kwrk01 .byte ;[1.7] irqsva = $45 ;place dos saves a reg hctrlq = $91 ;^Q with high bit on hctrls = $93 ;^S " ctrlq = $11 ;[59] ^Q ctrls = $13 ;[59] ^S dirq = $3fe ; interupt address sscstp = $578 ; +slot,bit 7 on turns off commands to ssc herld nasc <MICROTEK SV-622 V1.8> 1 ;tell who we are bad nasc <*****ERROR***** COM ROUTINES ASSEMBLED TOO LOW IN MEMORY> 1 ; ; Microtek serial interface support - These routines support the ; SV-622 card ; tl2int: lda #start^ cmp endker+1 ;are we loaded above main beq dontno ;cant tell yet bcc trble ;yes we are in trouble bcs setnm ;ok dontno lda #start\ ;well lets check 16 bits cmp endker beq setnm ;whee just exactly right bcs setnm ;ok trble ldx #bad\ ;got to tell someone ldy #bad^ jsr prstr ;print the message jsr prcrlf ;and terminate it properly setnm: lda kerins bne tl2prr ; already initialized lda #0 ; clear pointers etc sta pinptr ; buffer starts at 0 sta inptr ; buffer starts at 0 sta poutpt ;[59] " sta outptr ;[59] " ldx kersli ;now for the slot $n0 lda #mnminb ; Master port init sta kerins ; tell weve been here sta kr2pst,x ; Com port status sta kr2pcr,x ; Com master port lda #mncinb ; Control port init and #$f0 ; drop baud ora sscdbd ; and add default baud sta kr2pcc,x ; tl2prr: rts ; Return tl2cp: ldx kersli ; Offset into I/O locations tl2cp1: lda kr2pst,x ; Try for a character and #$08 ; Check for receive register full beq tl2cp7 ; no we dont have a ch lda kr2pch,x ; yes get ch ldy pinptr ; where to put it in buf sta inbuf,y ; save it inc pinptr ; ready for next ch bit flowfg ;[59] how about flow control bpl tl2cp7 ;[59] no lda inbuf,y ;[59] get input ch and #$7f ;[59] drop parity etc ; bvc tl2cp4 ;[59] yes,how about ^S received?, no cmp #ctrlq ;[59] is this continue(start up outputing) bne tl2cp4 ;[59] no, check for ^S lda flowfg ;[59] tattle about the continue and #$bf ;[59] sta flowfg ;[59] dec pinptr ;[59] forget about this character tl2cp2 ldy outptr ;[59] see if any to output cpy poutpt ;[59] well? beq tl2cp7 ;[59] no more we have put all tl2cp3 lda kr2pst,x ;[59] check status for output and #$10 ;[59] ready? beq tl2cp3 ;[59] no, spin lda outbuf,y ;[59] output ch sta kr2pch,x ;[59] bye inc outptr ;[59] ready for next jmp tl2cp2 ;[59] tl2cp4 cmp #ctrls ;[59] is this stop? bne tl2cp7 ;[59] no lda #$40 ;[59] yes, tattle ora flowfg ;[59] sta flowfg ;[59] now everyone knows dec pinptr ;[59] forget about the ^S character tl2cp7: lda pinptr cmp inptr rts ;return with false(0) or true(non 0) tl2gpc: ldx inptr ; get where it is in buf lda inbuf,x ; get the ch inc inptr ; ready for next get tl2rtc: rts ; and return tl2ppc: pha ; Hold the byte to send ldx kersli ; Get I/O location offset tl2pp1: lda kr2pst,x ; Get the status byte and #$10 ; Isolate the flag we want (TRE) beq tl2pp2 ; Transmit register is NOT empty, try again bit flowfg ;[59] flow control? bpl tl2pp0 ;[59] no bvc tl2pp0 ;[59] should we stop outputing?,no ldy poutpt ;[59] yes, save this ch in buffer pla ;[59] sta outbuf,y ;[59] inc poutpt ;[59] tell how many ;[1.6] rts ;[59] thats all jmp tl2cp1 ;[1.6] check for input and return tl2pp0 ;[59] pla ; Fetch the data byte off the stack sta kr2pch,x ; Stuff it at the proper loc to send it ;[1.6] rts ; and return jmp tl2cp1 ;[1.6] check for input and return tl2pp2: jsr tl2cp1 ; see if there is an input ch jmp tl2pp1 ;and try again tl2exi: lda #0 ;tell we did this sta kerins ;just in case init gets called ldx kersli ; get slot number sta kr2pst,x ;shut it down sta kr2pcr,x exit9: rts tl2cmd: ;find out what command beq tl2rts ;its drop line and we cant cmp #$0c beq break ;its a break command cmp #$0b beq baud ;its a set baud command cmp #hctrlq beq tl2sac ;its a xon command cmp #hctrls beq tl2sac ;its a xoff command tl2fls: lda #0 ;unknown command tl2rts: rts ;que passo ? return false(0) tl2sac: ldx flowfg ;do we have flow control bpl tl2fls ;no return false and #$7f ;drop high bit and send the ch jsr telspa ;set parity jsr tl2ppc ;output the ch lda #1 ;set true return rts baud: ldx kersli ; get slot number lda kr2pcc,x ; get com control and #$f0 ; and clear baud ora sscdbd ; enter sta kr2pcc,x ; and set new baud rate rts ;return true(non 0) break: ldy kersli ; ss card routine is not on lda kr2pcr,y ; get current command pha ; ;[1.7] lda #$c ; ora #$c ;[1.7] keep dtr up??? sta kr2pcr,y ; start the break ;[1.4] lda #233 ; for 233 millseconds ;[1.4] jsr wait ; the y reg is not clobered ;[1.7] lda #220 ;[1.4] 125ms lda #233 ;[1.7] 233 ms sta kwrk01 ;[1.7] break3 lda timect ;[1.7] 1 ms at a time jsr wait ;[1.4] dec kwrk01 ;[1.7] bne break3 ;[1.7] ;[1.7] lda #206 ;[1.4] 108ms ;[1.7] jsr wait ;[1.4] pla ; restore command sta kr2pcr,y ; lda #1 ;return true rts inbuf .blkb 256 ;input buffer outbuf .blkb 256 ;[59] output " endcom ;[1.5]