On Fri, Jul 9, 2021 at 6:14 PM ExPLIT | Pawel Radomychelski < exp...@mailbox.org> wrote:
> Thanks John, will try Laddie Alpha > I alos think it has something to do with the size of the file, because > small file transfers over dl+ works normally. > Yes. TPDD directory enumeration include a "file length" encoded as 2 bytes with a range of 0 to 65,53*5*. Binary ROM images are 32K = 32768, which is a length of file that can technically be represented in an unsigned 16-bit integer (2 bytes). It is less than 65,536. But ROM *image files* as used by REX are a hex representation, so they are twice that big. Each binary byte is represented by 2 ASCII characters encoding the upper and lower nibble of each byte, respectively. Which means those files they are *exactly* 64K = 65,53*6* The length of a 64K file cannot be represented in a 16-bit integer. You can only represent file sizes exactly one byte shorter... 65,53*5*. The TPDD protocol actually supports files bigger than 65535 bytes but the protocol is slightly different for representing file lengths greater than 65,535. So IF what I suspect is happening is happening, DLPlus still has that bug. I used to maintain it but I don't remember. Anyway I had to fix this for LaddieAlpha to make hex files work with REX. -- John.
