BASIC 7 How to check for DEVICE NOT PRESENT error.

stiggity
C-64 User

Posts: 208

BASIC 7 How to check for DEVICE NOT PRESENT error. May 14, 2022 0:24:25 GMT

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Post by stiggity on May 14, 2022 0:24:25 GMT

Hello,
Been dabbling along, and have came to a stump. How do I, In BASIC, check if a device is Not Present. My experience has gotten me this far. All routines work fine, as long as the range checking is just selected device/drive, and that drive is present. I've done some searches, and am hunting down a 1541/1571 Users Manual.
And Help is greatly appreciated.

tokra Global Moderator Posts: 181	BASIC 7 How to check for DEVICE NOT PRESENT error. May 14, 2022 8:18:04 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tokra on May 14, 2022 8:18:04 GMT Maybe try using OPEN 1,device number,15,"i":CLOSE 1 in combination with TRAP and then check variable ER to catch the DEVICE NOT PRESENT-error.

stiggity
C-64 User

Posts: 208

BASIC 7 How to check for DEVICE NOT PRESENT error. May 14, 2022 15:25:13 GMT

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Post by stiggity on May 14, 2022 15:25:13 GMT

tokra
possibly i'm Missing something.. in any scenario, the moment i attempt to OPEN any device not plugged in, basic breaks to DEVICE NOT PRESENT error. If theirs a prompt, let's say,
"Enter NEW Device #:" and i choose "10". The moment i attempt to access any DOS/oPen command on that value, i get an error. I just wasn't sure if there was some sort of means to detects all active IEC devices..

tokra Global Moderator Posts: 181	BASIC 7 How to check for DEVICE NOT PRESENT error. May 14, 2022 16:41:00 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tokra on May 14, 2022 16:41:00 GMT `10 trap60 20 input"drive number";d 30 open1,d,15,"i" 40 print"drive"d"exists" 50 close1:run 60 ifer=5thenprint"drive"d"does not exist" 70 resume50` Try this :-)
	Last Edit: May 14, 2022 16:44:38 GMT by tokra

stiggity C-64 User Posts: 208	BASIC 7 How to check for DEVICE NOT PRESENT error. May 16, 2022 21:20:35 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by stiggity on May 16, 2022 21:20:35 GMT tokra, I'm already using trap but i guess i could re-map it?? thank you for the example code. I really apreciate your time/effort.

Commodore 128

BASIC 7 How to check for DEVICE NOT PRESENT error.

Post by stiggity on May 14, 2022 0:24:25 GMT

Post by tokra on May 14, 2022 8:18:04 GMT

Post by stiggity on May 14, 2022 15:25:13 GMT

Post by tokra on May 14, 2022 16:41:00 GMT

Post by stiggity on May 16, 2022 21:20:35 GMT

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