FloatFFD
Author: Woodmass, Mark
| Release date | Links | Download |
|---|---|---|
| 2023-02-28 | Discord post | zip (hosted) - zip (Discord post) |
| 2018-02-24 (unreleased, provided by the author) | Discord post | tap (hosted) - zip (Discord post) |
FloatFFD tests HAL bug on 128K/+2 Spectrums described in Sinclair wiki:
Reads from port 0x7ffd cause a crash, as the 128's HAL10H8 chip does not distinguish between reads and writes to this port, resulting in a floating data bus being used to set the paging registers.
Note that this bug appears on 128K/+2 only, it does not appear on +2A/+3.
Spectrum 128K, Spectrum +2:
Published under the terms of the GNU Free Documentation License