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adapted to Kick Assembler, some documentation update

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FeralChild64 committed 2019-09-07 12:35:21 +02:00
1 parent ae23dbae7b
commit de27124b4f
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+4181 -3976
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c64/kernal/second.s
+15 -15
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@@ -1,23 +1,23 @@
;;
;; Official Kernal routine, described in:
;;
;; - [RG64] C64 Programmer's Reference Guide - page 296
;; - [CM64] Compute's Mapping the Commodore 64 - page 223/224
;; - https://www.pagetable.com/?p=1031, , https://github.com/mist64/cbmbus_doc
;;
;; CPU registers that has to be preserved (see [RG64]): .X, .Y
;;
//
// Official Kernal routine, described in:
//
// - [RG64] C64 Programmer's Reference Guide - page 296
// - [CM64] Compute's Mapping the Commodore 64 - page 223/224
// - https://www.pagetable.com/?p=1031, , https://github.com/mist64/cbmbus_doc
//
// CPU registers that has to be preserved (see [RG64]): .X, .Y
//
second:
SECOND:
;; Due to OPEN/CLOSE/TKSA/SECOND command encoding (see https://www.pagetable.com/?p=1031),
;; allowed channels are 0-15; report error if out of range
// Due to OPEN/CLOSE/TKSA/SECOND command encoding (see https://www.pagetable.com/?p=1031),
// allowed channels are 0-15; report error if out of range
cmp #$10
bcc +
jmp kernalerror_DEVICE_NOT_FOUND ; XXX find a better error message for wrong channel (create new one?)
*
bcc !+
jmp kernalerror_DEVICE_NOT_FOUND // XXX find a better error message for wrong channel (create new one?)
!:
ora #$60
jmp common_open_close_unlsn_second