<appendix>
<title>OS-9 Error Codes</title>
<para>
The error codes are shown in both hexadecimal (first column) and
decimal (second column). Error codes other than those listed are
generated by programming languages or user programs.
</para>

<informaltable frame="none">
<tgroup cols="3">
<colspec colwidth="0.6in">
<colspec colwidth="0.6in">
<colspec colwidth="3.8in">
<thead>
<row>
<entry rowsep="1">HEX</entry>
<entry rowsep="1">DEC</entry>
<entry rowsep="0"></entry>
</row>
</thead>
<tbody>
<row>
 <entry>$C8</entry>
 <entry>200</entry>
 <entry>PATH TABLE FULL - The file cannot be opened because
 the system path table is currently full.</entry></row>
<row>
 <entry>$C9</entry>
 <entry>201</entry>
 <entry>ILLEGAL PATH NUMBER - Number too large or for non-existant path.</entry></row>
<row>
 <entry>$CA</entry>
 <entry>202</entry>
 <entry>INTERRUPT POLLING TABLE FULL</entry></row>
<row>
 <entry>$CB</entry>
 <entry>203</entry>
 <entry>ILLEGAL MODE - attempt to perform I/O function of which the device or file is incapable.</entry></row>
<row>
 <entry>$CC</entry>
 <entry>204</entry>
 <entry>DEVICE TABLE FULL - Can't add another device</entry></row>
<row>
 <entry>$CD</entry>
 <entry>205</entry>
 <entry>ILLEGAL MODULE HEADER - module not loaded because its
 sync code, header parity, or CRC is incorrect.</entry></row>
<row>
 <entry>$CE</entry>
 <entry>206</entry>
 <entry>MODULE DIRECTORY FULL - Can't add another module</entry></row>
<row>
 <entry>$CF</entry>
 <entry>207</entry>
 <entry>MEMORY FULL - Level One: not enough contiquous RAM free.
 Level Two: process address space full</entry></row>
<row>
 <entry>$D0</entry>
 <entry>208</entry>
 <entry>ILLEGAL SERVICE REQUEST - System call had an illegal code number.</entry></row>
<row>
 <entry>$D1</entry>
 <entry>209</entry>
 <entry>MODULE BUSY - non-sharable module is in use by another process.</entry></row>
<row>
 <entry>$D2</entry>
 <entry>210</entry>
 <entry>BOUNDARY ERROR - Memory allocation or deallocation request not on a page boundary.</entry></row>
<row>
 <entry>$D3</entry>
 <entry>211</entry>
 <entry>END OF FILE - End of file encountered on read.</entry></row>
<row>
 <entry>$D4</entry>
 <entry>212</entry>
 <entry>RETURNING NON-ALLOCATED MEMORY - 
attempted to deallocate memory not previously assigned.</entry></row>
<row>
 <entry>$D5</entry>
 <entry>213</entry>
 <entry>NON-EXISTING SEGMENT - device has damaged file structure.</entry></row>
<row>
 <entry>$D6</entry>
 <entry>214</entry>
 <entry>NO PERMISSION - file attributes do not permit access requested.</entry></row>
<row>
 <entry>$D7</entry>
 <entry>215</entry>
 <entry>BAD PATH NAME - syntax error in pathlist (illegal character, etc.).</entry></row>
<row>
 <entry>$D8</entry>
 <entry>216</entry>
 <entry>PATH NAME NOT FOUND - can't find pathlist specified.</entry></row>
<row>
 <entry>$D9</entry>
 <entry>217</entry>
 <entry>SEGMENT LIST FULL - file is too fragmented to be expanded further.</entry></row>
<row>
 <entry>$DA</entry>
 <entry>218</entry>
 <entry>FILE ALREADY EXISTS - file name already appears in current directory.</entry></row>
<row>
 <entry>$DB</entry>
 <entry>219</entry>
 <entry>ILLEGAL BLOCK ADDRESS - device's file structure has been damaged.</entry></row>
<row>
 <entry>$DC</entry>
 <entry>220</entry>
 <entry>ILLEGAL BLOCK SIZE - device's file structure has been damaged.</entry></row>
<row>
 <entry>$DD</entry>
 <entry>221</entry>
 <entry>MODULE NOT FOUND - request for link to module not found in directory.</entry></row>
 <row>
 <entry>$DE</entry>
 <entry>222</entry>
 <entry>SECTOR OUT OF RANGE - device file structure damaged or
incorrectly formatted.</entry></row>
<row>
 <entry>$DF</entry>
 <entry>223</entry>
 <entry>SUICIDE ATTEMPT - request to return memory where your stack is located.</entry></row>
<row>
 <entry>$E0</entry>
 <entry>224</entry>
 <entry>ILLEGAL PROCESS NUMBER - no such process exists.</entry></row>
<row>
 <entry>$E2</entry>
 <entry>226</entry>
 <entry>NO CHILDREN - can't wait because process has no children.</entry></row>
<row>
 <entry>$E3</entry>
 <entry>227</entry>
 <entry>ILLEGAL SWI CODE - must be 1 to 3.</entry></row>
<row>
 <entry>$E4</entry>
 <entry>228</entry>
 <entry>PROCESS ABORTED - process aborted by signal code 2.</entry></row>
<row>
 <entry>$E5</entry>
 <entry>229</entry>
 <entry>PROCESS TABLE FULL - can't fork now.</entry></row>
<row>
 <entry>$E6</entry>
 <entry>230</entry>
 <entry>ILLEGAL PARAMETER AREA - high and low bounds passed in fork call are incorrect.</entry></row>
<row>
 <entry>$E7</entry>
 <entry>231</entry>
 <entry>KNOWN MODULE - for internal use only.</entry></row>
<row>
 <entry>$E8</entry>
 <entry>232</entry>
 <entry>INCORRECT MODULE CRC - module has bad CRC value.</entry></row>
<row>
 <entry>$E9</entry>
 <entry>233</entry>
 <entry>SIGNAL ERROR - receiving process has previous
unprocessed signal pending.</entry></row>
<row>
 <entry>$EA</entry>
 <entry>234</entry>
 <entry>NON-EXISTENT MODULE - unable to locate module.</entry></row>
<row>
 <entry>$EB</entry>
 <entry>235</entry>
 <entry>BAD NAME - illegal name syntax</entry></row>
<row>
 <entry>$EC</entry>
 <entry>236</entry>
 <entry>BAD HEADER - module header parity incorrect</entry></row>
<row>
 <entry>$ED</entry>
 <entry>237</entry>
 <entry>RAM FULL - no free system RAM available at this time</entry></row>
<row>
 <entry>$EE</entry>
 <entry>238</entry>
 <entry>UNKNOWN PROCESS ID - incorrect process ID number</entry></row>
<row>
 <entry>$EF</entry>
 <entry>239</entry>
 <entry>NO TASK NUMBER AVAILABLE - all task numbers in use</entry></row>
</tbody>
</tgroup>
</informaltable>


<section>
<title>Device Driver Errors</title>
<para>
The following error codes are generated by I/O device drivers, and
are somewhat hardware dependent. Consult manufacturer's hardware
manual for more details.
</para>

<informaltable frame="none">
<tgroup cols="3">
<colspec colwidth="0.6in">
<colspec colwidth="0.6in">
<colspec colwidth="3.8in">
<tbody>
<row>
 <entry>$F0</entry>
 <entry>240</entry>
 <entry>UNIT ERROR - device unit does not exist.</entry></row>
<row>
 <entry>$F1</entry>
 <entry>241</entry>
 <entry>SECTOR ERROR - sector number is out of range.</entry></row>
<row>
 <entry>$F2</entry>
 <entry>242</entry>
 <entry>WRITE PROTECT - device is write protected.</entry></row>
<row>
 <entry>$F3</entry>
 <entry>243</entry>
 <entry>CRC ERROR - CRC error on read or write verify.</entry></row>
<row>
 <entry>$F4</entry>
 <entry>244</entry>
 <entry>READ ERROR - Data transfer error during disk read
 operation, or SCF (terminal) input buffer overrun.</entry></row>
<row>
 <entry>$F5</entry>
 <entry>245</entry>
 <entry>WRITE ERROR - hardware error during disk write operation.</entry></row>
<row>
 <entry>$F6</entry>
 <entry>246</entry>
 <entry>NOT READY - device has "not ready" status.</entry></row>
<row>
 <entry>$F7</entry>
 <entry>247</entry>
 <entry>SEEK ERROR - physical seek to non-existant sector.</entry></row>
<row>
 <entry>$F8</entry>
 <entry>248</entry>
 <entry>MEDIA FULL - insufficient free space on media.</entry></row>
<row>
 <entry>$F9</entry>
 <entry>249</entry>
 <entry>WRONG TYPE - attempt to read incompatible media (i.e.
 attempt to read double-side disk on single-side drive)</entry></row>
<row>
 <entry>$FA</entry>
 <entry>250</entry>
 <entry>DEVICE BUSY - non-sharable device is in use</entry></row>
<row>
 <entry>$FB</entry>
 <entry>251</entry>
 <entry>DISK ID CHANGE - Media was changed with files open</entry></row>
<row>
 <entry>$FC</entry>
 <entry>252</entry>
 <entry>RECORD IS LOCKED-OUT - Another process is accessing the 
requested record.</entry></row>
<row>
 <entry>$FD</entry>
 <entry>253</entry>
 <entry>NON-SHARABLE FILE BUSY - Another process is accessing the
requested file.</entry></row>
</tbody>
</tgroup>
</informaltable>
</section>
</appendix>