| DB1 |
| Aliases | DB1 +3 Disc Backup Utility DB1 Plus 3 Disc Backup Utility |
| Release Date | 1988 |
| Original Publisher | Kobrahsoft (UK) |
| Min. Hardware | ZX-Spectrum 128 +3 |
| Language | English |
| Genre | Utility: Copy/Backup |
| Max. Players | 1 |
| Original Price | £12.95 |
| Disk Price | £12.95 |
| Groups | g164 |
| Martijn's WoS score | 100% (2 votes) |
Remarks
| The .dsk image below doesn't work in all emulators, due to the copy protection. In those cases: Firstly, the disk has to be set to auto-load. If the disk is loaded by pressing Enter for Load on the +3 start-up menu then it won't work, as the I-register will be set to $3F and the decryption routine will give the wrong result. With auto-load set the I-register will be set to $00 and the code will decrypt correctly. Secondly, set a break at $8BE2: LD SP,$8000; step through that command then skip over the next two CALLs and jump straight to the $8BEB: DI command, then Run and the DB1 start-up screen will be ready to use. I presume that the first CALL is the copy protection, as if it returns NZ (which it does) it makes the second CALL which erases all the memory and does a reset. |
Main File Downloads
| Filename | Release | Machine | Scheme | Language | Comments | |
| DB1.dsk.zip | Original | ZX-Spectrum 128 +3 | (None) | English |
Additional File Downloads
| Filename | Size | Release | Type | Language | Comments | |
| DB1.gif | 839 | Original | Running screen | |||
| DB1.pdf | 33,908 | Original | Instructions | English |
Magazine Reviews
| Crash | issue v.1 #60-1989/Jan | page 75 | - Review - Crash - Tech Niche |
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