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added IEC support to CLOSE routine

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FeralChild64 committed 2019-07-24 18:28:53 +02:00
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commit 431e5384a2
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+66 -46
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STATUS.md
+41 -41
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@@ -65,47 +65,47 @@ Note: only the jump table addresses are currently supported, real routine addres
NOTE: Even the 'DONE' routines won't support features described as missing in one of the previous chapters!
| Address | Name | Status | Remarks |
| ------- | :----: | :------: | :-------------------------------------: |
| $FF81 | CINT | PARTIAL | at least PAL/NTSC detection is missing |
| $FF84 | IOINIT | PARTIAL | at least SID volume handling is missing |
| $FF87 | RAMTAS | DONE | |
| $FF8A | RESTOR | PARTIAL | CBINV, NMINV, and USRCMD missing |
| $FF8D | VECTOR | DONE | |
| $FF90 | SETMSG | DONE | |
| $FF93 | SECOND | DONE | |
| $FF96 | TKSA | PARTIAL | should it do a turnaround? |
| $FF99 | MEMTOP | DONE | |
| $FF9C | MEMBOT | DONE | |
| $FF9F | SCNKEY | DONE | could be better integrated with ROM |
| $FFA2 | SETTMO | NOT DONE | |
| $FFA5 | ACPTR | PARTIAL | * work in progress |
| $FFA8 | CIOUT | DONE | |
| $FFAB | UNTLK | PARITAL | * work in progress |
| $FFAE | UNLSN | DONE | |
| $FFB1 | LISTEN | DONE | |
| $FFB4 | TALK | PARTIAL | should it do a turnaround? |
| $FFB7 | READST | DONE | |
| $FFBA | SETFLS | DONE | |
| $FFBD | SETNAM | DONE | |
| $FFC0 | OPEN | PARTIAL | * work in progress |
| $FFC3 | CLOSE | PARTIAL | * work in progress |
| $FFC6 | CHKIN | PARTIAL | * work in progress |
| $FFC9 | CHKOUT | PARTIAL | * work in progress |
| $FFCC | CLRCHN | PARTIAL | * work in progress |
| $FFCF | CHRIN | PARTIAL | |
| $FFD2 | CHROUT | PARTIAL | |
| $FFD5 | LOAD | PARTIAL | no VERIFY support yet |
| $FFD8 | SAVE | NOT DONE | * work in progress |
| $FFDB | SETTIM | NOT DONE | |
| $FFDE | RDTIM | NOT DONE | |
| $FFE1 | STOP | PARTIAL | no connection with UDTIM |
| $FFE4 | GETIN | PARTIAL | * work in progress |
| $FFE7 | CLALL | PARTIAL | * work in progress |
| $FFEA | UDTIM | NOT DONE | |
| $FFED | SCREEN | DONE | |
| $FFF0 | PLOT | NOT DONE | |
| $FFF3 | IOBASE | DONE | |
| Address | Name | Status | Remarks |
| ------- | :----: | :------: | :-------------------------------------------: |
| $FF81 | CINT | PARTIAL | at least PAL/NTSC detection is missing |
| $FF84 | IOINIT | PARTIAL | at least SID volume handling is missing |
| $FF87 | RAMTAS | DONE | |
| $FF8A | RESTOR | PARTIAL | CBINV, NMINV, and USRCMD missing |
| $FF8D | VECTOR | DONE | |
| $FF90 | SETMSG | DONE | |
| $FF93 | SECOND | DONE | |
| $FF96 | TKSA | DONE | |
| $FF99 | MEMTOP | DONE | |
| $FF9C | MEMBOT | DONE | |
| $FF9F | SCNKEY | DONE | could be better integrated with ROM (aliases) |
| $FFA2 | SETTMO | NOT DONE | |
| $FFA5 | ACPTR | PARTIAL | * work in progress |
| $FFA8 | CIOUT | DONE | |
| $FFAB | UNTLK | DONE | |
| $FFAE | UNLSN | DONE | |
| $FFB1 | LISTEN | DONE | |
| $FFB4 | TALK | DONE | |
| $FFB7 | READST | DONE | |
| $FFBA | SETFLS | DONE | |
| $FFBD | SETNAM | DONE | |
| $FFC0 | OPEN | PARTIAL | * work in progress |
| $FFC3 | CLOSE | DONE | |
| $FFC6 | CHKIN | PARTIAL | * work in progress |
| $FFC9 | CHKOUT | PARTIAL | * work in progress |
| $FFCC | CLRCHN | PARTIAL | * work in progress |
| $FFCF | CHRIN | PARTIAL | |
| $FFD2 | CHROUT | PARTIAL | |
| $FFD5 | LOAD | PARTIAL | no VERIFY support yet |
| $FFD8 | SAVE | NOT DONE | * work in progress |
| $FFDB | SETTIM | NOT DONE | |
| $FFDE | RDTIM | NOT DONE | |
| $FFE1 | STOP | PARTIAL | no connection with UDTIM |
| $FFE4 | GETIN | PARTIAL | * work in progress |
| $FFE7 | CLALL | PARTIAL | * work in progress |
| $FFEA | UDTIM | NOT DONE | |
| $FFED | SCREEN | DONE | |
| $FFF0 | PLOT | NOT DONE | |
| $FFF3 | IOBASE | DONE | |
### Unofficial Kernal locations
c64/kernal/close.s
+24 -4
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@@ -4,6 +4,7 @@
;;
;; - [RG64] C64 Programmer's Reference Guide - page 281/282
;; - [CM64] Compute's Mapping the Commodore 64 - page 229/230
;; - https://www.pagetable.com/?p=1031, https://github.com/mist64/cbmbus_doc (IEC command)
;;
;; CPU registers that has to be preserved (see [RG64]): none
;;
@@ -17,11 +18,28 @@ close:
jsr find_fls
bcs close_error_not_found ;; XXX can we report error in IOSTATUS here?
;; We have the entry index in Y
;; We have the entry index in Y - check whether this is IEC device
lda FAT, y
jsr iec_devnum_check
bcs close_remove_from_table
;; XXX some devices (like IEC) needs special support here, to free their internal resources!
;; Just make sure the Y register value is kept, or redo ldy DFTLN
;; IEC device
;; First check whether we have something to be sent in the buffer
lda C3PO
beq +
sec ; send it with EOI
jsr iec_tx_byte ; send the command regardless of the status
*
lda SAT, y ; get secondary address
ora $E0 ; CLOSE command
sta BSOUR
jsr iec_tx_command
bcs close_remove_from_table
jsr iec_tx_command_finalize
close_remove_from_table:
;; Remove channel from the table
iny
cpy #$0A
bpl +
@@ -36,8 +54,10 @@ close:
;; Decrement the list size variable
dec LDTND
;; FALLTHROUGH - success
clc ; report success - not sure if original CLOSE does this, but it's nevertheless a good practice
rts
close_error_not_found:
sec ; report success - not sure if original CLOSE does this, but it's nevertheless a good practice
rts
c64/kernal/unlsn.s
+1 -1
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@@ -18,7 +18,7 @@ unlsn:
lda C3PO
beq +
sec ; send it with EOI
jsr iec_tx_byte ; XXX what about the status of this operation?
jsr iec_tx_byte ; send the command regardless of the status
*
;; Buffer empty, send the command
lda #$3F