24 lines
986 B
PHP
24 lines
986 B
PHP
constant PI_BASE($A460) // $04600000..$04600033 Peripheral Interface (PI) Base
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constant PI_DRAM_ADDR($00) // $04600000 DRAM Address
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constant PI_CART_ADDR($04) // $04600004 Pbus (Cartridge) Address
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constant PI_RD_LEN($08) // $04600008 Read Length
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constant PI_WR_LEN($0C) // $0460000C Write Length
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constant PI_STATUS($10) // $04600010 Status
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constant PI_BSD_DOM1_LAT($14) // $04600014 Domain 1 Latency
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constant PI_BSD_DOM1_PWD($18) // $04600018 Domain 1 Pulse Width
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constant PI_BSD_DOM1_PGS($1C) // $0460001C Domain 1 Page Size
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constant PI_BSD_DOM1_RLS($20) // $04600020 Domain 1 Release
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constant PI_BSD_DOM2_LAT($24) // $04600024 Domain 2 Latency
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constant PI_BSD_DOM2_PWD($28) // $04600028 Domain 2 Pulse Width
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constant PI_BSD_DOM2_PGS($2C) // $0460002C Domain 2 Page Size
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constant PI_BSD_DOM2_RLS($30) // $04600030 Domain 2 Release
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macro PI_WAIT() {
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lui a0, PI_BASE
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-
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lw t0, PI_STATUS(a0)
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andi t0, t0, 3
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bnez t0,-
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nop
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}
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