display errors on 68k with ECS Denise

[wepl]

Describe the bug
When using WinUAE or vAmiga the display is corrupt/rolling when using ECS Denise.

To Reproduce
WinUAE:
I used Quickstart A1200, but other should work too
Set Hardware - Chipset - Chipset - ECS Denise
insert any boot disk (HD or FD) without any content
boot, so that initial CLI is displayed
-> gfx distorted
vAmiga:
select agnus_revision=ECS_2MB

Expected behaviour
Working as with OCS or AGA.
Problem vAmiga only supports OCS/ECS and OCS is restricted to 512K Chip Memory

Screenshots

Architecture
WinUAE 5.2.0
vAmigaWeb core 2.6.0

CPU

• m68k

Version
Daily Snapshot 20240313