The following modifications to CP/M’s PIP will allow you to send and receive text files using the Adam Link modem:
At the CP/M prompt type DDT PIP.COM
Once loaded type S103
Type in the following data for each address starting at 103 (do not type in the address (ie 103:)):
103: C3 104: 15 105: 01 106: C3 107: 0A 108: 01 109: 00 10A: F5 10B: DB 10C: 5F 10D: 1F 10E: 30 10F: FB 110: 79 111: D3 112: 5E 113: F1 114: C9 115: F5 116: DB 117: 5F 118: 1F 119: 1F 11A: 30 11B: FA 11C: DB 11D: 5E 11E: 32 11F: 09 120: 01 121: F1 122: C9
Type CTRL+Z to exit modify and then type G0 and enter to exit DDT
At CP/M prompt type SAVE 62 PIP.COM
Once the save is complete you can now use CP/M to send and receive files via the Adam Link modem.
To do this follow these steps:
Once you have a modem connection via Adam Link software, remove the DDP and put in your CP/M DDP and reset system (Adam Link modem will remain connected).
Once your are in CP/M:
- To send a text file use:
- To receive a text file use:
PIP filename=inp:[e]Once the DDP has stopped moving and PIP is showing a cursor send the text file from the remote system. After the text file is done type CTRL+Z on remote system and PIP will save the file.
You can eliminate the [e] if you do not want the transfer being echoed to the screen.
Here is the source code for the modifications to PIP
.org 0103H Inp: jp ModIn Out: jp ModOut CharIn: ; Data storage .db 0 ; Send character in C out to modem ModOut: push af ModOutLoop: in a,(05FH) rra jr NC,ModOutLoop ld a,c out (05EH),a pop af ret ; Wait for byte from modem and store it in 0109H and return ModIn: push af ModInLoop: in a,(05FH) ; Read status rra ; Rotate RXREADY into CF rra jr NC,ModInLoop in a,(05EH) ; Get character ld (CharIn),a pop af ret