{"action":"created","issue":{"url":"https://api.github.com/repos/openMSX/openMSX/issues/265","labels_url":"https://api.github.com/repos/openMSX/openMSX/issues/265/labels{/name}","comments_url":"https://api.github.com/repos/openMSX/openMSX/issues/265/comments","events_url":"https://api.github.com/repos/openMSX/openMSX/issues/265/events","html_url":"https://github.com/openMSX/openMSX/issues/265","id":90051191,"number":265,"title":"[Feature] Info-topics support on the debugger. Was: overlay for raster [sf#241]","user":{"login":"openMSX-import","id":12987176,"avatar_url":"https://avatars.githubusercontent.com/u/12987176?v=3","gravatar_id":"","url":"https://api.github.com/users/openMSX-import","html_url":"https://github.com/openMSX-import","followers_url":"https://api.github.com/users/openMSX-import/followers","following_url":"https://api.github.com/users/openMSX-import/following{/other_user}","gists_url":"https://api.github.com/users/openMSX-import/gists{/gist_id}","starred_url":"https://api.github.com/users/openMSX-import/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/openMSX-import/subscriptions","organizations_url":"https://api.github.com/users/openMSX-import/orgs","repos_url":"https://api.github.com/users/openMSX-import/repos","events_url":"https://api.github.com/users/openMSX-import/events{/privacy}","received_events_url":"https://api.github.com/users/openMSX-import/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/openMSX/openMSX/labels/Debugger","name":"Debugger","color":"ededed"},{"url":"https://api.github.com/repos/openMSX/openMSX/labels/feature%20request","name":"feature request","color":"84b6eb"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":4,"created_at":"2015-06-22T09:19:51Z","updated_at":"2015-06-22T09:27:33Z","closed_at":null,"body":"**Reported by sd-snatcher on 2012-09-25 02:11 UTC**\n\r\nThe VDP implementation of openMSX certainly knows the current pixel being drawn by the rasterizer at a given moment. It would be useful to have an overlay \\(a toggle, like toggle\\_scc\\_viewer\\) to show the coordinates of the pixel currently being drawn by the VDP.\r\n\r\nDue to the speed, this overlay will of course only be useful when running openMSX on step-by-step while debugging. This will help the programmer to:\r\n\r\n\\- Know when certain events will be triggered \\(vblank interrupt, line interrupt\\)\r\n\\- Debug why a sprite drawing glitch is happening \\(usually because of concurrent VRAM writes while the rasterizer is at a that address\\)\r\n\\- Debug splitscreen glitches\r\n"},"comment":{"url":"https://api.github.com/repos/openMSX/openMSX/issues/comments/114049743","html_url":"https://github.com/openMSX/openMSX/issues/265#issuecomment-114049743","issue_url":"https://api.github.com/repos/openMSX/openMSX/issues/265","id":114049743,"user":{"login":"openMSX-import","id":12987176,"avatar_url":"https://avatars.githubusercontent.com/u/12987176?v=3","gravatar_id":"","url":"https://api.github.com/users/openMSX-import","html_url":"https://github.com/openMSX-import","followers_url":"https://api.github.com/users/openMSX-import/followers","following_url":"https://api.github.com/users/openMSX-import/following{/other_user}","gists_url":"https://api.github.com/users/openMSX-import/gists{/gist_id}","starred_url":"https://api.github.com/users/openMSX-import/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/openMSX-import/subscriptions","organizations_url":"https://api.github.com/users/openMSX-import/orgs","repos_url":"https://api.github.com/users/openMSX-import/repos","events_url":"https://api.github.com/users/openMSX-import/events{/privacy}","received_events_url":"https://api.github.com/users/openMSX-import/received_events","type":"User","site_admin":false},"created_at":"2015-06-22T09:27:33Z","updated_at":"2015-06-22T09:27:33Z","body":"**Updated by sd-snatcher on 2012-09-25 22:24 UTC**\n- **summary**: Show current raster coordinates overlay, for debugging --> Info-topics support on the debugger. Was: overlay for raster"}}