TECF: Can't read file

[Laci1953]

I modified TE.CF : ... screen.columns = 120 ...

then tried to use TECF, but got the following error message :

J>tecf patch te.com te.cf TECF: Can't read file.

Why? te.com & te.cf are present:

J>sdir te.*

Directory For Drive J: User 0

Name     Bytes   Recs   Attributes      Name     Bytes   Recs   Attributes

---

TE BAK 2k 9 Dir RW TE CF 2k 9 Dir RW TE COM 20k 149 Dir RW

Total Bytes = 24k Total Records = 167 Files Found = 3 Total 1k Blocks = 23 Used/Max Dir Entries For Drive J: 346/1024

J>

Could this be caused by CP/M being executed in Udo Munk's Z80SIM? I do not know...

[MiguelVis]

Hi @Laci1953.

Yes it's strange.

That error can only occur in the read_com function when reading the COM file.

Computing its size in 128 byte records:

    // Get the file size in bytes
    if((com_size = fsize(com_fname)) == -1) {
        err_read();
    }

    com_size *= 128;

Opening the file:

    // Read the file into memory
    if(!(fp = fopen(com_fname, "rb"))) {
        err_read();
    }

Reading its contents into memory:

    if(fread(com_buf, com_size, 1, fp) != 1) {
        err_read();
    }

What TE COM adaptation are you trying to patch?

The emulator is running CP/M v2 or v3?

Do you have enough TPA?

Have you tried in another emulator?

[Laci1953]

Hi,

1. I used te_ws100.com2. 64K CP/M Vers. 2.2 (Z80 CBIOS V1.2 for Z80SIM, Copyright 1988-2007 by Udo Munk)3. TPA has 1KB more than the CP/M running on RC2014

2. Sorry, I have only Udo Munk's Z80PACK I suggest you to test your product on Z80PACK... regards,Ladislau

   On Tuesday, September 14, 2021, 01:20:36 AM GMT+3, MiguelVis @.***> wrote:

Hi @Laci1953.

Yes it's strange.

That error can only occur in the read_com function when reading the COM file.

Computing its size in 128 byte records: // Get the file size in bytes if((com_size = fsize(com_fname)) == -1) { err_read(); }

com_size *= 128;

Opening the file: // Read the file into memory if(!(fp = fopen(com_fname, "rb"))) { err_read(); }

Reading its contents into memory: if(fread(com_buf, com_size, 1, fp) != 1) { err_read(); }

What TE COM adaptation are you trying to patch?

The emulator is running CP/M v2 or v3?

Do you have enough TPA?

Have you tried in another emulator?

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[MiguelVis]

Hi @Laci1953.

Fixed with commit 239754c.

There was a bug in the function fsize() from the MESCC library fileio.h due to different behaviour in CP/M v2 & v3 BDOS 35 Compute file size.

Now it solved and TECF.COM works as expected.

Thanks for opening the issue.