127 lines
4.7 KiB
C
127 lines
4.7 KiB
C
#include "dump.h"
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/* Desc:
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* Pre:
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* Post:
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* Rtn:
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*/
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//main collected as much data about cart as possible without reading roms
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//now it's time to start running CRC's to try and finalize mapper/config
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//Once final mapper is known store header data in rom file and start dumping!
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int dump_cart( USBtransfer* transfer, rom_image *rom, cartridge *cart )
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{
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int num_buffers = 2;
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int buff_size = 128;
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int buff0 = 0;
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int buff1 = 1;
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int i;
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uint8_t data[buff_size];
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debug("dumping cart");
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//TODO provide user arg to force all these checks passed
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//first check if any provided args differ from what was detected
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check( (cart->console != UNKNOWN), "cartridge not detected, must provide console if autodetection is off");
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if ( rom->console != UNKNOWN ) {
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check( rom->console == cart->console,
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"request system dump doesn't match detected cartridge");
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}
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if ( (cart->mapper != UNKNOWN) && (rom->mapper != UNKNOWN) ) {
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check( rom->mapper == cart->mapper,
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"request mapper dump doesn't match detected mapper");
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}
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//start with reset and init
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io_reset( transfer );
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nes_init( transfer );
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//Run some CRC's to determine size of memories
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//setup buffers and manager
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//reset buffers first
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check(! reset_buffers( transfer ), "Unable to reset device buffers");
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//need to allocate some buffers for dumping
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//2x 128Byte buffers
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check(! allocate_buffers( transfer, num_buffers, buff_size ), "Unable to allocate buffers");
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//set buffer elements as needed
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//set reload which gets added to page_num after each buffer read
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//set reload to 256 = 1 when translated to page_num (done in allocate buffers funct)
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//set page_num to non-zero if offset arg sent
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//set mem_type and part_num to designate how to get/write data
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//check(! set_mem_n_part( transfer, buff0, MASKROM, PRGROM ), "Unable to set mem_type and part");
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//check(! set_mem_n_part( transfer, buff1, MASKROM, PRGROM ), "Unable to set mem_type and part");
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check(! set_mem_n_part( transfer, buff0, 0x12, 0x34 ), "Unable to set mem_type and part");
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check(! set_mem_n_part( transfer, buff1, 0x56, 0x78 ), "Unable to set mem_type and part");
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//set multiple and add_mult only when flashing
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//set mapper, map_var, and function to designate read/write algo
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//just dump visible NROM memory to start
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//check(! set_map_n_mapvar( transfer, buff0, NROM, NILL ), "Unable to set mapper and map_var");
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//check(! set_map_n_mapvar( transfer, buff1, NROM, NILL ), "Unable to set mapper and map_var");
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check(! set_map_n_mapvar( transfer, buff0, 0x89, 0xAB ), "Unable to set mapper and map_var");
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check(! set_map_n_mapvar( transfer, buff1, 0xCD, 0XEF ), "Unable to set mapper and map_var");
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//tell buffers what function to use for dumping
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//TODO when start implementing other mappers
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//debugging print out buffer elements
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get_buff_operation( transfer );
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get_buff_elements( transfer, buff0 );
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get_buff_elements( transfer, buff1 );
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debug("setting operation STARTDUMP");
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//inform buffer manager to start dumping operation now that buffers are initialized
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check(! set_buff_operation( transfer, STARTDUMP ), "Unable to set buffer operation");
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get_buff_operation( transfer );
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get_buff_elements( transfer, buff0 );
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get_buff_elements( transfer, buff1 );
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//manager updates buffer status' so they'll start dumping
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//once they're full manager prepares them to be read back on USB payloads
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//once the next payload request happens manager knows last buffer can start dumping again
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//buffer updates it's elements and goes off to dump next page
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debug("first payload");
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check(! payload_in( transfer, data, buff_size ), "Error with payload IN");
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check(! append_to_file( rom, data, buff_size ), "Error with file append");
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get_buff_operation( transfer );
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get_buff_elements( transfer, buff0 );
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get_buff_elements( transfer, buff1 );
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debug("second payload");
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check(! payload_in( transfer, data, buff_size ), "Error with payload IN");
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check(! append_to_file( rom, data, buff_size ), "Error with file append");
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get_buff_operation( transfer );
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get_buff_elements( transfer, buff0 );
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get_buff_elements( transfer, buff1 );
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//now just need to call series of payload IN transfers to retrieve data
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//for( i=0; i<(32*KByte/buff_size); i++) {
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// for( i=0; i<(8*KByte/buff_size); i++) {
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// //payload transfer in and append to file
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// if ( i % 32 == 0 ) debug("payload in #%d", i);
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// check(! payload_in( transfer, data, buff_size ), "Error with payload IN");
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// check(! append_to_file( rom, data, buff_size ), "Error with file append");
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// }
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debug("payload done");
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//TODO flush file from time to time..?
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//tell buffer manager when to stop
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//reset buffers and setup to dump CHR-ROM
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//close file in main
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//reset io at end
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io_reset( transfer );
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return SUCCESS;
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error:
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return ~SUCCESS;
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}
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