Document SPC command upload routine.
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p4plus2
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1 changed files with 34 additions and 34 deletions
68
bank_B5.asm
68
bank_B5.asm
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@ -40,7 +40,7 @@ CODE_B58024:
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PLB ;$B58026 |
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ORA #$0500 ;$B58027 |
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TAX ;$B5802A |
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JSR CODE_B581FB ;$B5802B |
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JSR write_spc_command ;$B5802B |
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PLB ;$B5802E |
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RTL ;$B5802F /
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@ -111,7 +111,7 @@ CODE_B58094: ; |
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STA $0619,x ;$B58096 |
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REP #$30 ;$B58099 |
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TAX ;$B5809B |
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JMP CODE_B581FB ;$B5809C /
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JMP write_spc_command ;$B5809C /
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CODE_B5809F:
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LDX #$04 ;$B5809F \
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@ -139,7 +139,7 @@ CODE_B580C3: ; |
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LDA $0619,x ;$B580C3 |
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REP #$30 ;$B580C6 |
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TAX ;$B580C8 |
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JSR CODE_B581FB ;$B580C9 |
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JSR write_spc_command ;$B580C9 |
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RTL ;$B580CC /
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DATA_B580CD:
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@ -151,7 +151,7 @@ CODE_B580D5:
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PLB ;$B580D7 |
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STA $1C ;$B580D8 |
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LDX #$00FF ;$B580DA |
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JSR CODE_B581FB ;$B580DD |
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JSR write_spc_command ;$B580DD |
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JSR CODE_B58469 ;$B580E0 |
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JSR CODE_B5825C ;$B580E3 |
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JSR CODE_B58277 ;$B580E6 |
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@ -165,12 +165,12 @@ CODE_B580EE:
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PLB ;$B580F0 |
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JSR CODE_B5816D ;$B580F1 |
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LDX #$00FE ;$B580F4 |
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JSR CODE_B581FB ;$B580F7 |
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JSR write_spc_command ;$B580F7 |
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LDA $1E ;$B580FA |
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XBA ;$B580FC |
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ORA #$00FA ;$B580FD |
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TAX ;$B58100 |
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JSR CODE_B581FB ;$B58101 |
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JSR write_spc_command ;$B58101 |
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PLB ;$B58104 |
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RTL ;$B58105 /
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@ -180,19 +180,19 @@ CODE_B58106:
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PLB ;$B58108 |
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STA $1C ;$B58109 |
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LDX #$00FF ;$B5810B |
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JSR CODE_B581FB ;$B5810E |
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JSR write_spc_command ;$B5810E |
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JSR CODE_B58469 ;$B58111 |
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JSR CODE_B5825C ;$B58114 |
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JSR CODE_B58277 ;$B58117 |
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JSR CODE_B5816D ;$B5811A |
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JSR execute_spc_sound_engine ;$B5811D |
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LDX #$00FE ;$B58120 |
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JSR CODE_B581FB ;$B58123 |
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JSR write_spc_command ;$B58123 |
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LDA $1E ;$B58126 |
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XBA ;$B58128 |
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ORA #$00FA ;$B58129 |
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TAX ;$B5812C |
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JSR CODE_B581FB ;$B5812D |
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JSR write_spc_command ;$B5812D |
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PLB ;$B58130 |
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RTL ;$B58131 /
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@ -204,7 +204,7 @@ CODE_B58132:
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AND #$00FF ;$B58136 |
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STA $1C ;$B58139 |
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LDX #$00FF ;$B5813B |
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JSR CODE_B581FB ;$B5813E |
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JSR write_spc_command ;$B5813E |
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JSR CODE_B58469 ;$B58141 |
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JSR CODE_B5825C ;$B58144 |
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JSR CODE_B58277 ;$B58147 |
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@ -214,14 +214,14 @@ CODE_B58132:
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AND #$FF00 ;$B58151 |
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ORA #$00FB ;$B58154 |
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TAX ;$B58157 |
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JSR CODE_B581FB ;$B58158 |
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JSR write_spc_command ;$B58158 |
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LDX #$00FE ;$B5815B |
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JSR CODE_B581FB ;$B5815E |
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JSR write_spc_command ;$B5815E |
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LDA $1E ;$B58161 |
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XBA ;$B58163 |
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ORA #$00FA ;$B58164 |
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TAX ;$B58167 |
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JSR CODE_B581FB ;$B58168 |
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JSR write_spc_command ;$B58168 |
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PLB ;$B5816B |
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RTL ;$B5816C /
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@ -279,7 +279,7 @@ CODE_B581C2:
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XBA ;$B581C5 |
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ORA #$00FC ;$B581C6 |
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TAX ;$B581C9 |
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JSR CODE_B581FB ;$B581CA |
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JSR write_spc_command ;$B581CA |
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RTL ;$B581CD /
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CODE_B581CE:
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@ -287,7 +287,7 @@ CODE_B581CE:
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XBA ;$B581D1 |
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ORA #$00FD ;$B581D2 |
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TAX ;$B581D5 |
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JSR CODE_B581FB ;$B581D6 |
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JSR write_spc_command ;$B581D6 |
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RTL ;$B581D9 /
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CODE_B581DA:
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@ -301,35 +301,35 @@ CODE_B581DB:
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XBA ;$B581E1 |
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ORA #$00FB ;$B581E2 |
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TAX ;$B581E5 |
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JSR CODE_B581FB ;$B581E6 |
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JSR write_spc_command ;$B581E6 |
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LDX #$00FE ;$B581E9 |
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JSR CODE_B581FB ;$B581EC |
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JSR write_spc_command ;$B581EC |
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LDA $1E ;$B581EF |
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XBA ;$B581F1 |
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ORA #$00FA ;$B581F2 |
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TAX ;$B581F5 |
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JSR CODE_B581FB ;$B581F6 |
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JSR write_spc_command ;$B581F6 |
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PLB ;$B581F9 |
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RTL ;$B581FA /
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CODE_B581FB:
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TXA ;$B581FB \
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REP #$20 ;$B581FC |
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SEP #$10 ;$B581FE |
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LDX $00 ;$B58200 |
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CODE_B58202: ; |
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CPX $2140 ;$B58202 |
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BNE CODE_B58202 ;$B58205 |
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STA $2141 ;$B58207 |
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INX ;$B5820A |
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STX $2140 ;$B5820B |
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STX $00 ;$B5820E |
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write_spc_command:
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TXA ;$B581FB \ Move the command into A
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REP #$20 ;$B581FC |\ Use index as 8 bit, with 16 bit accumulator
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SEP #$10 ;$B581FE |/
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LDX $00 ;$B58200 | Load the previous SPC transaction id
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- ; |
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CPX $2140 ;$B58202 |\ Wait for the SPC engine to echo the previous transaction id
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BNE - ;$B58205 |/
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STA $2141 ;$B58207 | Write the command to the SPC engine
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INX ;$B5820A |\ Increment and send the SPC transaction id
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STX $2140 ;$B5820B |/
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STX $00 ;$B5820E | Store the SPC transaction id
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REP #$30 ;$B58210 |
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RTS ;$B58212 /
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RTS ;$B58212 / Command upload finished
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upload_spc_base_engine:
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REP #$20 ;$B58213 \
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SEP #$10 ;$B58215 | Use index as 8 bit, with 16 bit accumulator
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upload_spc_base_engine: ; \
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REP #$20 ;$B58213 |\ Use index as 8 bit, with 16 bit accumulator
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SEP #$10 ;$B58215 |/
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LDA #$BBAA ;$B58217 | The IPL uses BBAA to indicate ready state
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- ; |\ Wait for the SPC 700 to be ready
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CMP $2140 ;$B5821A | |
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