Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- cpm:write_a_bios [2026/06/18 13:43] – [CP/M-2.2 BDOS-Funktionen] volkerp
+++ cpm:write_a_bios [2026/06/22 06:33] (aktuell) – volkerp
@@ Zeile 10: / Zeile 10: @@
   * [[cpm:write_a_bios:teil_1|]] Warmstart, Zeichen-I/O, Diskettenfunktion
   * [[cpm:write_a_bios:teil_2|]] Ansteuerung einer RAM-Disk
-===== CP/M-2.2 BIOS-Funktionen =====
-^ Funktion ^ Offs zu @0001 ^ Nr (Turbo-Pascal) ^ Beschreibung ^ in ^ out ^
-| BOOT	   |-3| -1 | Cold start routine                       | - | - |
-| WBOOT	   | 0| 0 | Warm boot - reload command processor     | - | - |
-| CONST	   | 3| 1 | Console status                           | - | A=Status (0=no key, 0FFh=key pressed) |
-| CONIN	   | 6| 2 | Console input, wait for key              | - | A=key |
-| CONOUT   | 9| 3 | Console output                           | C=char | - |
-| LIST	   |12| 4 | Printer output, wait for ready           | C=char | - |
-| PUNCH	   |15| 5 | Paper tape punch output                  | C=char | - |
-| READER   |18| 6 | Paper tape reader input                  | - | A=char |
-| HOME	   |21| 7 | Move disc head to track 0                | - | - |
-| SELDSK   |24| 8 | Select disc drive                        | C=drive(0=A,1=B,..) | HL=dph, 0000 as error indicator  |
-| SETTRK   |27| 9 | Set track number                         | BC=track(0..nn) | - |
-| SETSEC   |30| 10 | Set sector number                        | BC=sector(0..nn)| - |
-| SETDMA   |33| 11 | Set DMA address                          | BC=dma | - |
-| READ	   |36| 12 | Read a sector                            | - | A=0 for OK, 1 for unrecoverable error, 0FFh if media changed |
-| WRITE	   |39| 13 | Write a sector                           | C=0 Write can be deferred, C=1 Write must be immediate, C=2 Write can be deferred, no pre-read is necessary | A=0 for OK, 1 for unrecoverable error, 2 if disc is readonly, 0FFh if media changed |
-| LISTST   |42| 14 | Status of list device                    | - | A=0 (not ready) or A=0FFh (ready) |
-| SECTRAN  |45| 15 | Sector translation for skewing           | BC=logical sector number (zero based)\\ DE=address of translation table | HL = physical sector number |
-===== CP/M-2.2 BDOS-Funktionen =====
-^ Number ^ Hex ^ Function Name ^ Input ^ Output ^
-| 0 | 0 | System Reset | - | - |
-| 1 | 1 | Console Input | - | A = ASCII char |
-| 2 | 2 | Console Output | E = char | - |
-| 3 | 3 | Reader Input | - | A = ASCII char |
-| 4 | 4 | Punch Output | E = char | - |
-| 5 | 5 | List Output | E = char | - |
-| 6 | 6 | Direct Console I/O | E = 0FFH (input) | A = char |
-|   |   | | E = 0FEH (status) | A = status |
-|   |   | | E = char | - |
-| 7 | 7 | Get I/O Byte | - | A = I/O byte value |
-| 8 | 8 | Set I/O Byte | E = I/O byte | - |
-| 9 | 9 | Print String | DE = Buffer Address | - |
-| 10 | A | Read Console String | DE = Buffer | Console characters in Buffer |
-| 11 | B | Get Console Status | - | A = 00/non zero |
-| 12 | C | Return Version # | - | HL = Version # |
-| 13 | D | Reset Disk System | - | - |
-| 14 | E | Select Disk | E = Disk # | - |
-| 15 | F | Open File | DE = FCB address | A = FF if not found |
-| 16 | 10 | Close File | DE = FCB address | A = FF if not found |
-| 17 | 11 | Search For First | DE = FCB address | A = Directory Code |
-| 18 | 12 | Search For Next | - | A = Directory Code |
-| 19 | 13 | Delete File | DE = FCB address | A = - |
-| 20 | 14 | Read Sequential | DE = FCB address | A = Error Code |
-| 21 | 15 | Write Sequential | DE = FCB Address | A = Error Code |
-| 22 | 16 | Make File | DE = FCB address | A = FF if no DIR Space |
-| 23 | 17 | Rename File | DE = FCB address | A = FF if not found |
-| 24 | 18 | Return Login Vector | - | HL = Login Vector* |
-| 25 | 19 | Return Current Disk | - | A = Current Disk Number |
-| 26 | 1A | Set DMA Address | DE = DMA address | - |
-| 27 | 1B | Get ADDR (ALLOC) | - | HL = ALLOC address* |
-| 28 | 1C | Write Protect Disk | - | - |
-| 29 | 1D | Get Read/only Vector | - | HL = ALLOC address* |
-| 30 | 1E | Set File Attributes | DE = FCB address | A = - |
-| 31 | 1F | Get ADDR (Disk Parms) | - | HL = DPB address |
-| 32 | 20 | Set/Get User Code | E = 0FFH for Get | A = User Number |
-|   |   | | E = 00 to 0FH for Set | - |
-| 33 | 21 | Read Random | DE = FCB address | A = Error |
-| 34 | 22 | Write Random | DE = FCB address | A = Error Code |
-| 35 | 23 | Compute File Size | DE = FCB address | r0, r1, r2 |
-| 36 | 24 | Set Random Record | DE = FCB address | r0, r1, r2 |
-| 37 | 25 | Reset Drive | DE = Drive Vector | A = 0 |
-| 38 | 26 | Access Drive | not supported |
-| 39 | 27 | Free Drive | not supported |
-| 40 | 28 | Write Random w/Fill | DE = FCB | A = error code |
-* Note that A=L, and B=H upon return.