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35 lines
753 B
ArmAsm
35 lines
753 B
ArmAsm
; RR-Net driver
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.export cs_init
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.export cs_packet_page
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.export cs_packet_data
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.export cs_rxtx_data
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.export cs_tx_cmd
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.export cs_tx_len
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.export cs_driver_name
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rr_ctl = $de01 ;address of 'control' port on Retro-Replay
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cs_packet_page = $de02 ;address of 'packet page' port on RR-Net
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cs_packet_data = $de04;address of 'packet data' port on RR-Net
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cs_rxtx_data = $de08 ;address of 'recieve/transmit data' port on RR-Net
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cs_tx_cmd = $de0c;address of 'transmit command' port on RR-Net
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cs_tx_len = $de0e;address of 'transmission length' port on RR-Net
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.code
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;initialise Retro Replay so we can access the network adapter
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;inputs: none
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;outputs: none
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cs_init:
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lda rr_ctl
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ora #1
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sta rr_ctl
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rts
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.rodata
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cs_driver_name:
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.asciiz "RR-NET"
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