<html> <head> <title>Memory manipulation commands of µCsim</title> </head> <body bgcolor="white"> <h2>Memory manipulation commands of µCsim</h2> Every command which changes content of ROM area such as <b><a href="#dl">dl</a></b> or <b><a href="cmd_set#set_memory">set memory</a></b> deletes result of <a href="analyzer.html">code analyzer</a> and causes to re-analyze the code. <hr> <a name="file"><h3>file,load <i>"FILE"</i></h3></a> Loads file named FILE into the simulated code memory. File must contain data in Intel HEX format. <pre> > <font color="#118811">file "../../remo.hex"</font> 55470 words read from ../../remo.hex > </pre> Don't forget to enclose file name in quotes to make the parameter to be a string. <hr> <a name="dl"><h3>download,dl</h3></a> Download command. It is same as <a href="#l">load</a> above but it reads information from command console which is standard input by default. This command stops read records when it detects an "END" record which is normaly the last record. This command has two equivalent forms <b>download</b> and <b>dl</b>. <pre> $ <font color="#118811">s51 -V</font> ucsim 0.2.24, Copyright (C) 1997 Daniel Drotos, Talker Bt. ucsim comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. > <font color="#118811">do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font> 197 bytes loaded > </pre> <hr> <a name="fill"><h3>fill <i>memory_type start end data</i></h3></a> Fill memory region with specified data. First parameter specifies memory. Name of the memory must be used, it can be checked using <a href="cmd_general.html#info_memory">info memory</a> command which lists size and name of all available memories. <p><b>start</b> and <b>end</b> parameters specify first and last address of the memory region to be filled. <p><b>data</b> parameter specifies the data which is used to fill the memory region. <pre> $ <font color="#118811">s51</font> ucsim 0.2.38-pre2, Copyright (C) 1997 Daniel Drotos, Talker Bt. ucsim comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. > <font color="#118811">fill xram 12 0x12 0x56</font> > <font color="#118811">dump xram 0 0x20</font> 0x0000 00 00 00 00 00 00 00 00 ........ 0x0008 00 00 00 00 56 56 56 56 ....VVVV 0x0010 56 56 56 00 00 00 00 00 VVV..... 0x0018 00 00 00 00 00 00 00 00 ........ 0x0020 00 . > </pre> <hr> <a name="where"><h3>where,Where <i>memory_type data...</i></h3></a> Searching for some data in memory. First parameter specifies memory. Name of the memory must be used, it can be checked using <a href="cmd_general.html#info_memory">info memory</a> command which lists size and name of all available memories. <p>Other parameters can be mixed list of strings (characters between " and ") and numbers. Strings can contain escape sequencies. µCsim merges all parameters together and will search for megred list of values in specified memory. <p><b>where</b> command do case unsensitive search while <b>Where</b> command is for case sensitive search. <p>Search is done in whole memory and all matches are dumped out. <pre> $ <font color="#118811">/s51</font> ucsim 0.2.38-pre2, Copyright (C) 1997 Daniel Drotos, Talker Bt. ucsim comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. > <font color="#118811">set mem xram 20 "Dani d ani D ani dani Dani"</font> 0x0014 44 61 6e 69 20 64 20 61 Dani d a 0x001c 6e 69 20 44 20 61 6e 69 ni D ani 0x0024 20 64 61 6e 69 20 44 61 dani Da 0x002c 6e 69 ni > <font color="#118811">where xram "dani"</font> 0x0014 44 61 6e 69 Dani 0x0025 64 61 6e 69 dani 0x002a 44 61 6e 69 Dani > <font color="#118811">Where xram "d ani"</font> 0x0019 64 20 61 6e 69 d ani > </pre> <hr> <a name="memory"><h3>memory</h3></a> This set of commands can be used to manipulate <a href="memory.html">memory system</a> including <a href="memory.html#chip">chips</a>, <a href="memory.html#address_space">address spaces</a> and <a href="memory.html#address_decoder">address decoders</a>. <p>Subcommands are: <p>memory <a href="#memory_createchip">createchip</a> <br>memory <a href="#memory_createaddressspace">createaddressspace</a> <br>memory <a href="#memory_createaddressdecoder">createaddressdecoder</a> <blockquote> <a name="memory_createchip"><h4>memory createchip|cchip <i>id size cellsize</i></h4></a> This command creates a chip (array of storage elements). <b>id</b> must be a unique name which will be used to identify the chip in other commands. <b>size</b> is number of storage elements, <b>cellsize</b> is number of bits stored in one element. <hr> <a name="memory_createaddressspace"><h4>memory createaddressspace|caddressspace|caddrspace|caspace|createaddrspace|createaspace <i>id startaddr size</i></h4></a> This command should never be used. It defines an adress space, names it as <b>id</b> sets its starting address and size. Simulator programs (<b>s51</b>, <b>savr</b>, etc.) define necessary address spaces for themself, so this command is not needed. <hr> <a name="memory_createaddressdecoder"><h4>memory createaddressdecoder|caddrdecoder|caddressdecoder|cadecoder|createaddrdecoder|createadecoder <i>addressspace begin end chip begin</i></h4></a> Address decoder maps a part of the address space to a chip area. <b>addressspace</b> parameter is name of the address space, <b>begin</b> and <b>end</b> specify address range of the address space to be mapped. <b>chip</b> parameter is name of the memory chip and the second <b>begin</b> parameter is the (start of the) chip address where the area is mapped to. <p>Address space will be split if a "middle" are is mapped: <pre> $ <font color="#118811">s51</font> uCsim 0.5.0-pre3, Copyright (C) 1997 Daniel Drotos, Talker Bt. uCsim comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. 0> <font color="#118811">i m</font> Memory chips: 0x000000-0x00ffff 65536 rom_chip (8,%02x,0x%04x) 0x000000-0x00007f 128 iram_chip (8,%02x,0x%02x) 0x000000-0x00ffff 65536 xram_chip (8,%02x,0x%04x) 0x000000-0x00007f 128 sfr_chip (8,%02x,0x%02x) Address spaces: 0x000000-0x00ffff 65536 rom (8,%02x,0x%04x) 0x000000-0x00007f 128 iram (8,%02x,0x%02x) 0x000080-0x0000ff 128 sfr (8,%02x,0x%02x) 0x000000-0x00ffff 65536 xram (8,%02x,0x%04x) Address decoders: 0 rom 0x0000 0xffff -> rom_chip 0x0000 activated 0 iram 0x00 0x7f -> iram_chip 0x00 activated 0 sfr 0x80 0xff -> sfr_chip 0x00 activated 0 xram 0x0000 0xffff -> xram_chip 0x0000 activated 0> <font color="#118811">mem cchip myram 0x1000 8</font> 0> <font color="#118811">mem createaddressdecoder xram 1234 2000 myram 15</font> 0> <font color="#118811">i m</font> Memory chips: 0x000000-0x00ffff 65536 rom_chip (8,%02x,0x%04x) 0x000000-0x00007f 128 iram_chip (8,%02x,0x%02x) 0x000000-0x00ffff 65536 xram_chip (8,%02x,0x%04x) 0x000000-0x00007f 128 sfr_chip (8,%02x,0x%02x) 0x000000-0x000fff 4096 myram (8,%02x,0x%03x) Address spaces: 0x000000-0x00ffff 65536 rom (8,%02x,0x%04x) 0x000000-0x00007f 128 iram (8,%02x,0x%02x) 0x000080-0x0000ff 128 sfr (8,%02x,0x%02x) 0x000000-0x00ffff 65536 xram (8,%02x,0x%04x) Address decoders: 0 rom 0x0000 0xffff -> rom_chip 0x0000 activated 0 iram 0x00 0x7f -> iram_chip 0x00 activated 0 sfr 0x80 0xff -> sfr_chip 0x00 activated 0 xram 0x0000 0x04d1 -> xram_chip 0x0000 activated 1 xram 0x04d2 0x07d0 -> myram 0x00f activated 2 xram 0x07d1 0xffff -> xram_chip 0x07d1 activated 0> </pre> It is easy to share chip area between address spaces: <pre> $ <font color="#118811">s51</font> uCsim 0.5.0-pre3, Copyright (C) 1997 Daniel Drotos, Talker Bt. uCsim comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. 0> <font color="#118811">mem createaddressdecoder rom 0 0xfff xram_chip 0xf000</font> 0> <font color="#118811">i m</font> Memory chips: 0x000000-0x00ffff 65536 rom_chip (8,%02x,0x%04x) 0x000000-0x00007f 128 iram_chip (8,%02x,0x%02x) 0x000000-0x00ffff 65536 xram_chip (8,%02x,0x%04x) 0x000000-0x00007f 128 sfr_chip (8,%02x,0x%02x) Address spaces: 0x000000-0x00ffff 65536 rom (8,%02x,0x%04x) 0x000000-0x00007f 128 iram (8,%02x,0x%02x) 0x000080-0x0000ff 128 sfr (8,%02x,0x%02x) 0x000000-0x00ffff 65536 xram (8,%02x,0x%04x) Address decoders: 0 rom 0x0000 0x0fff -> xram_chip 0xf000 activated 1 rom 0x1000 0xffff -> rom_chip 0x1000 activated 0 iram 0x00 0x7f -> iram_chip 0x00 activated 0 sfr 0x80 0xff -> sfr_chip 0x00 activated 0 xram 0x0000 0xffff -> xram_chip 0x0000 activated 0> <font color="#118811">rom[0]=0xab</font> 171 0> <font color="#118811">xram[0xf000]</font> 171 0> </pre> <hr> </blockquote> <hr> </body> </html>
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