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emailler/drivers/ethernet.s

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Introduced IP65 "combo" libraries. Up to now every IP65 library contained exactly one Ethernet driver. In scenarios without strict memory limitations I might however be benefitial to have an IP65 library containing all Ethernet drivers available for a given target. The Ethernet hardware detection that was already present before is used in this scenario to try to initialize one Ethernet driver after the other until one succeeds. If all drivers fail to initialize the user gets informed as usual. The WIZ811MJ driver was primarily introduced for orthogonality reasons. There are however at least two W5100-based prototypes for the C64 so it makes at least some sense. The name was chosen as sort of placeholder for "something containing a W5100 chip".
2015-07-07 17:43:32 +00:00
; Wrapper for Contiki ethernet driver
1. Replaced IP65 Ethernet drivers with Contiki drivers. * CS8900A The Contiki driver allows to adjust the chip base addr at runtime (which allows to support different slots in the Apple II) and removes received frames from the chip if there's no room to send frames. * LAN91C96 The Contiki driver was used by IP65 more or less unchanged in the first place. * W5100 The Contiki driver allows to adjust the chip base addr at runtime (which allows to support different slots in the Apple II) and stays clear from the W5100 hybrid mode. It presumes a fully functional W5100 register auto-increment and pre-calculates necessary W5100 frame buffer wrap-arounds and thus achieves the maximal 6502 <-> W5100 transfer speed.
2014-06-12 22:00:53 +00:00
.include "../inc/common.i"
.export eth_init
.export eth_rx
.export eth_tx
.import eth_inp
.import eth_inp_len
.import eth_outp
.import eth_outp_len
Introduced IP65 "combo" libraries. Up to now every IP65 library contained exactly one Ethernet driver. In scenarios without strict memory limitations I might however be benefitial to have an IP65 library containing all Ethernet drivers available for a given target. The Ethernet hardware detection that was already present before is used in this scenario to try to initialize one Ethernet driver after the other until one succeeds. If all drivers fail to initialize the user gets informed as usual. The WIZ811MJ driver was primarily introduced for orthogonality reasons. There are however at least two W5100-based prototypes for the C64 so it makes at least some sense. The name was chosen as sort of placeholder for "something containing a W5100 chip".
2015-07-07 17:43:32 +00:00
.import eth
1. Replaced IP65 Ethernet drivers with Contiki drivers. * CS8900A The Contiki driver allows to adjust the chip base addr at runtime (which allows to support different slots in the Apple II) and removes received frames from the chip if there's no room to send frames. * LAN91C96 The Contiki driver was used by IP65 more or less unchanged in the first place. * W5100 The Contiki driver allows to adjust the chip base addr at runtime (which allows to support different slots in the Apple II) and stays clear from the W5100 hybrid mode. It presumes a fully functional W5100 register auto-increment and pre-calculates necessary W5100 frame buffer wrap-arounds and thus achieves the maximal 6502 <-> W5100 transfer speed.
2014-06-12 22:00:53 +00:00
.import eth_driver_io_base
.import cfg_mac
.struct driver
drvtype .byte 3
apiver .byte
mac .byte 6
bufaddr .addr
bufsize .word
init .byte 3
poll .byte 3
send .byte 3
exit .byte 3
.endstruct
.code
; initialize the ethernet adaptor
; inputs: none
; outputs: carry flag is set if there was an error, clear otherwise
eth_init:
ldax eth_driver_io_base
jsr eth+driver::init
ldx #5
: lda eth+driver::mac,x
sta cfg_mac,x
dex
bpl :-
Introduced IP65 "combo" libraries. Up to now every IP65 library contained exactly one Ethernet driver. In scenarios without strict memory limitations I might however be benefitial to have an IP65 library containing all Ethernet drivers available for a given target. The Ethernet hardware detection that was already present before is used in this scenario to try to initialize one Ethernet driver after the other until one succeeds. If all drivers fail to initialize the user gets informed as usual. The WIZ811MJ driver was primarily introduced for orthogonality reasons. There are however at least two W5100-based prototypes for the C64 so it makes at least some sense. The name was chosen as sort of placeholder for "something containing a W5100 chip".
2015-07-07 17:43:32 +00:00
ldax #1518
stax eth+driver::bufsize
1. Replaced IP65 Ethernet drivers with Contiki drivers. * CS8900A The Contiki driver allows to adjust the chip base addr at runtime (which allows to support different slots in the Apple II) and removes received frames from the chip if there's no room to send frames. * LAN91C96 The Contiki driver was used by IP65 more or less unchanged in the first place. * W5100 The Contiki driver allows to adjust the chip base addr at runtime (which allows to support different slots in the Apple II) and stays clear from the W5100 hybrid mode. It presumes a fully functional W5100 register auto-increment and pre-calculates necessary W5100 frame buffer wrap-arounds and thus achieves the maximal 6502 <-> W5100 transfer speed.
2014-06-12 22:00:53 +00:00
rts
; receive a packet
; inputs: none
; outputs:
; if there was an error receiving the packet (or no packet was ready) then carry flag is set
; if packet was received correctly then carry flag is clear,
; eth_inp contains the received packet,
; and eth_inp_len contains the length of the packet
eth_rx:
ldax #eth_inp
stax eth+driver::bufaddr
jsr eth+driver::poll
stax eth_inp_len
rts
; send a packet
; inputs:
; eth_outp: packet to send
; eth_outp_len: length of packet to send
; outputs:
; if there was an error sending the packet then carry flag is set
; otherwise carry flag is cleared
eth_tx:
ldax #eth_outp
stax eth+driver::bufaddr
ldax eth_outp_len
jmp eth+driver::send
Introduced IP65 "combo" libraries. Up to now every IP65 library contained exactly one Ethernet driver. In scenarios without strict memory limitations I might however be benefitial to have an IP65 library containing all Ethernet drivers available for a given target. The Ethernet hardware detection that was already present before is used in this scenario to try to initialize one Ethernet driver after the other until one succeeds. If all drivers fail to initialize the user gets informed as usual. The WIZ811MJ driver was primarily introduced for orthogonality reasons. There are however at least two W5100-based prototypes for the C64 so it makes at least some sense. The name was chosen as sort of placeholder for "something containing a W5100 chip".
2015-07-07 17:43:32 +00:00
; -- LICENSE FOR ethernet.s --
1. Replaced IP65 Ethernet drivers with Contiki drivers. * CS8900A The Contiki driver allows to adjust the chip base addr at runtime (which allows to support different slots in the Apple II) and removes received frames from the chip if there's no room to send frames. * LAN91C96 The Contiki driver was used by IP65 more or less unchanged in the first place. * W5100 The Contiki driver allows to adjust the chip base addr at runtime (which allows to support different slots in the Apple II) and stays clear from the W5100 hybrid mode. It presumes a fully functional W5100 register auto-increment and pre-calculates necessary W5100 frame buffer wrap-arounds and thus achieves the maximal 6502 <-> W5100 transfer speed.
2014-06-12 22:00:53 +00:00
; The contents of this file are subject to the Mozilla Public License
; Version 1.1 (the "License"); you may not use this file except in
; compliance with the License. You may obtain a copy of the License at
; http://www.mozilla.org/MPL/
;
; Software distributed under the License is distributed on an "AS IS"
; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
; License for the specific language governing rights and limitations
; under the License.
;
; The Original Code is ip65.
;
; The Initial Developer of the Original Code is Jonno Downes,
; jonno@jamtronix.com.
; Portions created by the Initial Developer are Copyright (C) 2009
; Jonno Downes. All Rights Reserved.
; -- LICENSE END --
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