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mg_notes:cpm:softcard_cpm_ref [2018/07/03 11:30] M.G. [Softcard CP/M Reference] |
mg_notes:cpm:softcard_cpm_ref [2019/09/30 18:04] M.G. [The Apple CP/M Disk Parameter Tables] |
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| Line 73: | Line 73: | ||
| Turn on your Apple II. | Turn on your Apple II. | ||
| + | ==== DIP Switches ==== | ||
| + | The four DIP switches are normally OFF for CP/M operation. Their functions are: | ||
| + | |||
| + | ^ Switch ^ Function when ON ^ | ||
| + | | 1-1 | Disable address translation. | | ||
| + | | 1-2 | Higher priority DMA devices cause SoftCard to relinguish bus. | | ||
| + | | 1-3 | Pass NMI line to Z80. | | ||
| + | | 1-4 | Pass IRQ line to Z80. | | ||
| ===== Apple Softcard CP/M specific programs ===== | ===== Apple Softcard CP/M specific programs ===== | ||
| Line 182: | Line 190: | ||
| ^ Key ^ Action ^ | ^ Key ^ Action ^ | ||
| - | | <key>Ctrl-S</key> | Temporarily stops character output to TTY: Output is resumed when any character is typed | | + | | <key>Ctrl-'S'</key> | Temporarily stops character output to TTY: Output is resumed when any character is typed | |
| | <key>Ctrl-P</key> | Sends all character output to LPT: as well as to TTY: \\ This "printer echo" mode remains in effect until another <key>Ctrl-P</key> is typed. | | | <key>Ctrl-P</key> | Sends all character output to LPT: as well as to TTY: \\ This "printer echo" mode remains in effect until another <key>Ctrl-P</key> is typed. | | ||
| Line 438: | Line 446: | ||
| Because of the way the 6502 is "put to sleep" by the Z-80 SoftCard using the | Because of the way the 6502 is "put to sleep" by the Z-80 SoftCard using the | ||
| DMA line on the Apple bus, ALL interrupt processing must be handled by the | DMA line on the Apple bus, ALL interrupt processing must be handled by the | ||
| - | 6502. AN interrupt can occur at two times: while in Z-80 mode and while in | + | 6502. An interrupt can occur at two times: while in Z-80 mode and while in |
| 6502 mode: | 6502 mode: | ||
| Line 943: | Line 951: | ||
| ===== Microsoft SoftCard Version 2.23 BIOS ===== | ===== Microsoft SoftCard Version 2.23 BIOS ===== | ||
| - | THe Microsoft 2.20B BIOS uses some ingainly fixes to correct a few | + | THe Microsoft 2.20B BIOS uses some ungainly fixes to correct a few |
| problems, but still a few problems remain in the area of hardware | problems, but still a few problems remain in the area of hardware | ||
| interfacing. Most of these problems are corrected in the SoftCard | interfacing. Most of these problems are corrected in the SoftCard | ||
| Line 950: | Line 958: | ||
| The hardware interfacing is greatly improved because version 2.23 | The hardware interfacing is greatly improved because version 2.23 | ||
| uses Apple Computer's protocols for operating what Apple calls | uses Apple Computer's protocols for operating what Apple calls | ||
| - | Formware Cards. Most of the cards that can operate a host of | + | Firmware Cards. Most of the cards that can operate a host of |
| peripheral devices and have them do all sorts of neat tricks are | peripheral devices and have them do all sorts of neat tricks are | ||
| Firmware Cards. Version 2.20B could not identify Firmware Cards and | Firmware Cards. Version 2.20B could not identify Firmware Cards and | ||
| Line 1024: | Line 1032: | ||
| | $DD0 | $DE0 | Firmware Card initialization routine, followed by a routine that uses the Apple protocol for firmware I/O | | | $DD0 | $DE0 | Firmware Card initialization routine, followed by a routine that uses the Apple protocol for firmware I/O | | ||
| | $DE1 | $DEE | Firmware Card output routine | | | $DE1 | $DEE | Firmware Card output routine | | ||
| - | | $DEF | $DFA | Formware Card routine which waits for card to accept I/O | | + | | $DEF | $DFA | Firmware Card routine which waits for card to accept I/O | |
| | $E00 | $E02 | CP/M entry to the warm loader routine | | | $E00 | $E02 | CP/M entry to the warm loader routine | | ||
| | $E03 | $E08 | Entry to CP/M RWTS routine on Language Card bank 1 | | | $E03 | $E08 | Entry to CP/M RWTS routine on Language Card bank 1 | | ||
| Line 1417: | Line 1425: | ||
| ^ Physical format: ^ A ^ B ^ C ^ D ^ | ^ Physical format: ^ A ^ B ^ C ^ D ^ | ||
| - | ^ ^ Apple CP/M ^^ Enhanced ^ Standard ^ | + | ^ ^ Apple CP/M ^^ Enhanced CP/M ^ Standard \\ CP/M ^ |
| - | ^ ^ 13-sect ^ 16-sect ^ 80-trk/16-sec/2-side ^ 8" SSSD ^ | + | ^ ^ 13-sect ^ 16-sect ^ 80-trk \\ 16-sec \\ 2-side ^ 8" SSSD ^ |
| | Bytes/sector | 256 | 256 | 256 | 128 | | | Bytes/sector | 256 | 256 | 256 | 128 | | ||
| | Sectors/track | 13 | 16 | 16 | 26 | | | Sectors/track | 13 | 16 | 16 | 26 | | ||
| Line 1433: | Line 1441: | ||
| **Apple CP/M DPB - Disk Parameter Block** | **Apple CP/M DPB - Disk Parameter Block** | ||
| - | ^ ^ A ^ B ^ C ^ D ^ ^ | + | ^ ^ A ^ B ^ C ^ D ^ ^ |
| + | ^ ^ Apple CP/M ^^ Enhanced \\ CP/M ^ Standard \\ CP/M ^ ^ | ||
| | SPT 16b | 26 | 32 | 32 | 26 | 128-byte Logical Sectors/Track | | | SPT 16b | 26 | 32 | 32 | 26 | 128-byte Logical Sectors/Track | | ||
| | BSH 8b | 3 | 3 | 4 | 3 | Block shift factor | | | BSH 8b | 3 | 3 | 4 | 3 | Block shift factor | | ||